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U.S. PATENT AND TRADEMARK OFFICE
Patent Technology Monitoring Team (PTMT)

Patenting By Geographic Region (State and Country),
Breakout By Technology Class

Count of 2009 - 2013 Utility Patent Grants
As Distributed By Calendar Year of Grant

- Explanation of Data -

Rank Ordered Listing of Technology Classes Receiving 1 or More Utility Patents During the Period
Originating From

MINNESOTA

( patent origin is determined by the residence of the first-named inventor )
( technology class is determined by the primary classification assigned to a patent- see 'Explanation of Data' )
( some classes have been combined together under a single class identifier )

The following table displays technology classes and counts of utility patents classified in them; patents are distributed by year of patent grant.
Class Class Title 2009 2010 2011 2012 2013 Total
607 Surgery: Light, Thermal, and Electrical Application 206 349 362 391 483 1791
128 Surgery (includes Class 600) 99 150 206 208 247 910
606 Surgery (instruments) 65 116 120 139 141 581
707 DP: Database and File Management or Data Structures (Data Processing) 77 112 124 144 112 569
604 Surgery (Medicators and Receptors) 57 102 109 137 142 547
800 Multicellular Living Organisms and Unmodified Parts Thereof and Related Processes 52 82 68 113 128 443
424 Drug, Bio-Affecting and Body Treating Compositions (includes Class 514) 41 61 106 102 104 414
623 Prosthesis (i.e., Artificial Body Members), Parts Thereof, or Aids and Accessories Therefor 49 57 91 73 89 359
705 DP: Financial, Business Practice, Management, or Cost/Price Determination (Data Processing) 32 68 67 87 85 339
711 Memory (Electrical Computers and Digital Processing Systems) 61 49 77 74 69 330
385 Optical Waveguides 67 73 58 58 61 317
709 Multicomputer Data Transferring (Electrical Computers and Digital Processing Systems) 59 72 58 62 61 312
365 Static Information Storage and Retrieval 21 51 86 87 59 304
360 Dynamic Magnetic Information Storage or Retrieval 47 57 61 62 75 302
370 Multiplex Communications 49 85 71 44 50 299
428 Stock Material or Miscellaneous Articles 28 59 48 68 65 268
520 Synthetic Resins or Natural Rubbers (includes Classes 520-528) 33 55 51 41 65 245
073 Measuring and Testing 45 50 59 43 40 237
714 Error Detection/Correction and Fault Detection/Recovery 48 54 53 37 37 229
361 Electricity: Electrical Systems and Devices 47 40 43 37 47 214
340 Communications: Electrical 40 44 38 38 43 203
257 Active Solid-State Devices (e.g., Transistors, Solid-State Diodes) 16 48 48 42 46 200
435 Chemistry: Molecular Biology and Microbiology 24 45 37 35 37 178
382 Image Analysis 19 21 37 48 49 174
700 DP: Generic Control Systems or Specific Applications (Data Processing) 20 35 41 46 30 172
029 Metal Working 32 37 26 35 28 158
210 Liquid Purification or Separation 31 32 39 27 22 151
710 Input/Output (Electrical Computers and Digital Data Processing Systems) 26 35 33 25 28 147
345 Computer Graphics Processing and Selective Visual Display Systems 14 22 36 43 31 146
702 DP: Measuring, Calibrating, or Testing (Data Processing) 35 24 35 29 20 143
055 Gas Separation 15 17 38 28 41 139
429 Chemistry: Electrical Current Producing Apparatus, Product, and Process 15 38 33 26 24 136
701 DP: Vehicles, Navigation, and Relative Location (Data Processing) 15 21 22 36 36 130
713 Support (Electrical Computers and Digital Processing Systems) 17 24 25 30 31 127
235 Registers (e.g., cash registers, calculators, devices for counting movements of devices, etc.) 21 28 33 26 16 124
052 Static Structures (e.g., Buildings) 17 24 27 25 28 121
439 Electrical Connectors 36 27 25 13 19 120
426 Food or Edible Material: Processes, Compositions, and Products 16 24 23 33 23 119
455 Telecommunications 30 18 21 19 31 119
715 DP: Presentation Processing of Document, Operator Interface Processing, and Screen Saver Display Processing (Data Processing) 19 15 30 30 25 119
438 Semiconductor Device Manufacturing: Process 23 23 27 21 23 117
422 Chemical Apparatus and Process Disinfecting, Deodorizing, Preserving, or Sterilizing 15 23 22 31 25 116
180 Motor Vehicles 18 27 19 22 28 114
717 DP: Software Development, Installation, and Management (Data Processing) 11 13 18 33 39 114
356 Optics: Measuring and Testing 18 31 28 18 18 113
427 Coating Processes 17 26 18 31 17 109
381 Electrical Audio Signal Processing Systems and Devices 8 10 16 35 39 108
324 Electricity: Measuring and Testing 27 23 21 18 16 105
718 Virtual Machine Task or Process Management or Task Management/Control (Electrical Computers and Digital Processing Systems) 12 10 9 32 42 105
280 Land Vehicles 15 21 24 21 22 103
510 Cleaning Compositions for Solid Surfaces, Auxiliary Compositions Therefor, or Processes of Preparing the Compositions 13 17 23 27 22 102
264 Plastic and Nonmetallic Article Shaping or Treating: Processes 12 27 22 20 19 100
712 Processing Architectures and Instruction Processing, e.g., Processors (Electrical Computers and Digital Processing Systems) 8 24 31 16 16 95
248 Supports (e.g., for holding articles, etc.) 15 19 28 14 16 92
726 Information Security 8 12 13 27 31 91
359 Optical: Systems and Elements 16 13 17 18 26 90
532 Organic Compounds (includes Classes 532-570) 9 21 20 11 28 89
375 Pulse or Digital Communications 15 21 13 18 19 86
716 Computer-Aided Design and Analysis of Circuits and Semiconductor Masks 15 15 21 12 17 80
137 Fluid Handling 16 18 11 20 12 77
174 Electricity: Conductors and Insulators 13 13 14 13 13 66
362 Illumination 16 15 11 6 18 66
156 Adhesive Bonding and Miscellaneous Chemical Manufacture 5 18 13 7 20 63
206 Special Receptacle or Package 12 16 12 12 10 62
436 Chemistry: Analytical and Immunological Testing 13 8 14 12 15 62
062 Refrigeration 4 16 15 11 13 59
482 Exercise Devices 14 18 11 9 6 58
134 Cleaning and Liquid Contact with Solids 8 5 17 16 11 57
250 Radiant Energy 11 13 15 7 10 56
348 Television 6 4 7 17 22 56
398 Optical Communications 4 12 12 11 17 56
015 Brushing, Scrubbing, and General Cleaning 6 12 10 8 18 54
040 Card, Picture, or Sign Exhibiting 6 11 15 12 10 54
211 Supports: Racks 4 8 13 14 15 54
219 Electric Heating 5 18 11 9 11 54
239 Fluid Sprinkling, Spraying, and Diffusing 6 17 12 6 11 52
703 DP: Structural Design, Modeling, Simulation, and Emulation (Data Processing) 8 15 9 9 11 52
719 Interprogram Communication or Interprocess Communication (Ipc) (Electrical Computers and Digital Processing Systems) 7 7 8 9 21 52
060 Power Plants 8 12 6 10 12 48
220 Receptacles 8 4 10 7 18 47
425 Plastic Article or Earthenware Shaping or Treating: Apparatus 6 12 15 6 7 46
119 Animal Husbandry 9 6 11 11 7 44
095 Gas Separation: Processes 3 10 7 6 17 43
327 Miscellaneous Active Electrical Nonlinear Devices, Circuits, and Systems 15 7 9 7 5 43
369 Dynamic Information Storage or Retrieval 1 2 4 8 28 43
451 Abrading 11 9 6 8 9 43
342 Communications: Directive Radio Wave Systems and Devices (e.g., Radar, Radio Navigation) 16 9 8 5 4 42
404 Road Structure, Process, or Apparatus 5 8 6 5 18 42
043 Fishing, Trapping, and Vermin Destroying 9 11 5 5 10 40
222 Dispensing (apparatus and process) 2 6 8 9 15 40
252 Compositions 8 5 4 10 10 37
296 Land Vehicles: Bodies and Tops 4 9 4 9 10 36
430 Radiation Imagery Chemistry: Process, Composition, or Product Thereof 13 9 3 2 9 36
417 Pumps 7 7 7 7 7 35
053 Package Making 5 6 7 5 11 34
172 Earth Working 9 9 6 3 7 34
198 Conveyors: Power-Driven 8 5 6 7 7 33
706 DP: Artificial Intelligence (Data Processing) 5 5 4 7 12 33
349 Liquid Crystal Cells, Elements and Systems 2 8 10 6 6 32
601 Surgery: Kinesitherapy 6 7 6 10 3 32
005 Beds 8 6 9 5 3 31
326 Electronic Digital Logic Circuitry 4 7 3 4 13 31
704 DP: Speech Signal Processing, Linguistics, Language Translation, and Audio Compression/Decompression (Data Processing) 5 6 6 5 9 31
051 Abrasive Tool Making Process, Material, or Composition 12 0 9 6 3 30
310 Electrical Generator or Motor Structure 8 4 9 3 6 30
708 Arithmetic Processing and Calculating (Electrical Computers) 4 4 1 10 11 30
118 Coating Apparatus 5 7 4 6 7 29
123 Internal-Combustion Engines 3 4 8 6 8 29
236 Automatic Temperature and Humidity Regulation 4 11 8 4 2 29
307 Electrical Transmission or Interconnection Systems 6 6 7 4 6 29
315 Electric Lamp and Discharge Devices: Systems 1 2 7 4 15 29
380 Cryptography 3 4 8 7 7 29
056 Harvesters 6 8 1 8 5 28
473 Games Using Tangible Projectile 3 7 6 8 3 27
084 Music 7 3 5 5 6 26
244 Aeronautics and Astronautics 3 3 7 7 6 26
297 Chairs and Seats 7 3 4 4 8 26
358 Facsimile and Static Presentation Processing 5 5 6 3 7 26
530 Chemistry: Natural Resins or Derivatives; Peptides or Proteins; Lignins or Reaction Products Thereof 4 7 3 3 9 26
602 Surgery: Splint, Brace, or Bandage 6 5 7 4 4 26
072 Metal Deforming 1 7 10 3 4 25
096 Gas Separation: Apparatus 3 5 5 4 8 25
205 Electrolysis: Processes, Compositions Used Therein, and Methods of Preparing the Compositions 2 5 8 7 3 25
463 Amusement Devices: Games 3 3 5 7 7 25
002 Apparel 0 8 6 6 4 24
181 Acoustics 6 4 5 5 4 24
414 Material or Article Handling 6 5 5 3 5 24
049 Movable or Removable Closures 1 7 1 5 9 23
433 Dentistry 4 7 3 2 7 23
037 Excavating 7 6 5 2 2 22
114 Ships 6 2 3 6 5 22
229 Envelopes, Wrappers, and Paperboard Boxes 5 5 4 3 5 22
273 Amusement Devices: Games 6 3 4 4 5 22
405 Hydraulic and Earth Engineering 6 6 3 4 3 22
033 Geometrical Instruments 8 1 7 2 3 21
241 Solid Material Comminution or Disintegration 3 3 9 2 4 21
294 Handling: Hand and Hoist-Line Implements 1 7 5 5 3 21
318 Electricity: Motive Power Systems 5 6 5 2 3 21
374 Thermal Measuring and Testing 1 4 1 10 5 21
379 Telephonic Communications 6 4 5 1 5 21
396 Photography 3 4 6 6 2 21
254 Implements or Apparatus for Applying Pushing or Pulling Force 6 4 6 3 1 20
331 Oscillators 7 5 3 4 1 20
024 Buckles, Buttons, Clasps, Etc. 2 7 2 5 3 19
290 Prime-Mover Dynamo Plants 4 6 5 1 3 19
366 Agitating (e.g., of articles and materials) 1 4 5 4 5 19
434 Education and Demonstration 3 1 3 3 9 19
075 Specialized Metallurgical Processes, Compositions for Use Therein, Consolidated Metal Powder Compositions, and Loose Metal Particulate Mixtures 2 3 3 5 5 18
135 Tent, Canopy, Umbrella, or Cane 2 2 6 4 4 18
141 Fluent Material Handling, with Receiver or Receiver Coacting Means 1 8 0 4 5 18
372 Coherent Light Generators 1 3 0 4 10 18
074 Machine Element or Mechanism 2 4 1 6 4 17
320 Electricity: Battery or Capacitor Charging or Discharging 3 0 4 4 6 17
083 Cutting 1 2 3 5 5 16
106 Compositions: Coating or Plastic 5 3 3 1 4 16
192 Clutches and Power-Stop Control 3 3 4 3 3 16
285 Pipe Joints or Couplings 3 4 1 3 5 16
343 Communications: Radio Wave Antennas 2 3 3 2 6 16
431 Combustion 2 2 3 3 6 16
442 Fabric (Woven, Knitted, or Nonwoven Textile or Cloth, Etc.) 2 6 5 0 3 16
101 Printing 7 2 2 2 2 15
261 Gas and Liquid Contact Apparatus 1 4 2 3 5 15
341 Coded Data Generation or Conversion 6 4 2 2 1 15
347 Incremental Printing of Symbolic Information 1 1 4 4 5 15
401 Coating Implements with Material Supply 3 5 1 3 3 15
030 Cutlery 0 0 6 5 3 14
036 Boots, Shoes, and Leggings 1 7 1 2 3 14
047 Plant Husbandry 2 1 5 4 2 14
165 Heat Exchange 2 0 4 5 3 14
242 Winding, Tensioning, or Guiding 2 3 4 2 3 14
251 Valves and Valve Actuation 0 5 3 3 3 14
313 Electric Lamp and Discharge Devices 1 0 4 3 6 14
403 Joints and Connections 2 2 3 2 5 14
725 Interactive Video Distribution Systems 3 4 3 2 2 14
016 Miscellaneous Hardware (e.g., Bushing, Carpet Fastener, Caster, Door Closer, Panel Hanger, Attachable or Adjunct Handle, Hinge, Window Sash Balance, Etc.) 1 4 3 1 4 13
042 Firearms 3 2 3 2 3 13
102 Ammunition and Explosives 3 3 0 2 5 13
126 Stoves and Furnaces 2 4 4 1 2 13
204 Chemistry: Electrical and Wave Energy 1 4 1 5 2 13
216 Etching a Substrate: Processes 2 0 2 4 5 13
330 Amplifiers 1 2 6 1 3 13
353 Optics: Image Projectors 3 4 2 3 1 13
502 Catalyst, Solid Sorbent, or Support Therefor: Product or Process of Making 1 3 4 3 2 13
099 Foods and Beverages: Apparatus 1 3 1 1 6 12
124 Mechanical Guns and Projectors 2 3 3 1 2 11
138 Pipes and Tubular Conduits 2 1 3 2 3 11
209 Classifying, Separating, and Assorting Solids 2 0 4 3 2 11
256 Fences 1 3 2 3 2 11
383 Flexible Bags 1 1 1 4 4 11
440 Marine Propulsion 4 2 2 2 1 11
508 Solid Anti-Friction Devices, Materials Therefor, Lubricant or Separant Compositions for Moving Solid Surfaces, and Miscellaneous Mineral Oil Compositions 2 3 1 2 3 11
008 Bleaching and Dyeing; Fluid Treatment and Chemical Modification of Textiles and Fibers 0 3 2 3 2 10
034 Drying and Gas or Vapor Contact with Solids 0 1 5 2 2 10
089 Ordnance 3 1 2 2 2 10
182 Fire Escape, Ladder, or Scaffold 0 0 3 3 4 10
200 Electricity: Circuit Makers and Breakers 3 0 5 0 2 10
312 Supports: Cabinet Structure 0 1 2 4 3 10
351 Optics: Eye Examining, Vision Testing and Correcting 3 3 0 2 2 10
363 Electric Power Conversion Systems 0 3 3 1 3 10
392 Electric Resistance Heating Devices 2 3 1 1 3 10
501 Compositions: Ceramic 5 3 1 0 1 10
144 Woodworking 2 3 3 1 0 9
169 Fire Extinguishers 2 1 1 2 3 9
227 Elongated-Member-Driving Apparatus 0 3 3 1 2 9
269 Work Holders 0 0 4 2 3 9
322 Electricity: Single Generator Systems 2 0 3 0 4 9
423 Chemistry of Inorganic Compounds 1 1 0 5 2 9
446 Amusement Devices: Toys 2 1 3 0 3 9
065 Glass Manufacturing 2 0 4 2 0 8
125 Stone Working 0 0 3 4 1 8
149 Explosive and Thermic Compositions or Charges 0 0 1 4 3 8
160 Flexible or Portable Closure, Partition, or Panel 0 2 2 2 2 8
175 Boring or Penetrating the Earth 0 4 2 1 1 8
188 Brakes 1 3 0 2 2 8
221 Article Dispensing 2 1 3 1 1 8
323 Electricity: Power Supply or Regulation Systems 0 0 2 4 2 8
452 Butchering 1 2 2 1 2 8
044 Fuel and Related Compositions 0 1 0 1 5 7
108 Horizontally Supported Planar Surfaces 0 1 1 2 3 7
116 Signals and Indicators 1 3 1 0 2 7
164 Metal Founding 1 3 1 1 1 7
271 Sheet Feeding or Delivering 1 3 1 1 1 7
298 Land Vehicles: Dumping 1 2 1 2 1 7
378 X-Ray or Gamma Ray Systems or Devices 0 3 3 0 1 7
386 Motion Video Signal Processing for Recording or Reproducing 2 2 1 0 2 7
415 Rotary Kinetic Fluid Motors or Pumps 0 1 3 2 1 7
441 Buoys, Rafts, and Aquatic Devices 0 3 0 3 1 7
493 Manufacturing Container or Tube From Paper; or Other Manufacturing From a Sheet or Web 0 2 2 1 2 7
506 Combinatorial Chemistry Technology: Method, Library, Apparatus 2 1 4 0 0 7
720 Dynamic Optical Information Storage or Retrieval 0 3 0 1 3 7
081 Tools 0 2 0 1 3 6
132 Toilet 3 0 3 0 0 6
223 Apparel Apparatus 0 3 1 1 1 6
224 Package and Article Carriers 0 1 3 1 1 6
228 Metal Fusion Bonding 1 3 0 1 1 6
246 Railway Switches and Signals 1 0 1 2 2 6
249 Static Molds 1 2 1 2 0 6
420 Alloys or Metallic Compositions 1 1 1 1 2 6
445 Electric Lamp or Space Discharge Component or Device Manufacturing 0 0 3 1 2 6
507 Earth Boring, Well Treating, and Oil Field Chemistry 1 1 0 3 1 6
100 Presses 1 1 1 2 0 5
110 Furnaces 0 1 2 2 0 5
122 Liquid Heaters and Vaporizers 1 1 0 1 2 5
127 Sugar, Starch, and Carbohydrates 0 3 1 1 0 5
148 Metal Treatment 0 1 2 2 0 5
166 Wells (shafts or deep borings in the earth, e.g., for oil and gas) 0 1 0 2 2 5
193 Conveyors, Chutes, Skids, Guides, and Ways 3 1 1 0 0 5
283 Printed Matter 2 0 2 0 1 5
292 Closure Fasteners 1 0 2 0 2 5
305 Wheel Substitutes for Land Vehicles 0 2 2 1 0 5
338 Electrical Resistors 0 2 1 2 0 5
400 Typewriting Machines 0 2 2 0 1 5
410 Freight Accommodation On Freight Carrier 0 2 2 1 0 5
418 Rotary Expansible Chamber Devices 1 1 0 3 0 5
454 Ventilation 2 0 1 2 0 5
472 Amusement Devices 0 0 2 1 2 5
004 Baths, Closets, Sinks, and Spittoons 1 0 2 0 1 4
091 Motors: Expansible Chamber Type 1 0 2 0 1 4
111 Planting 1 0 0 1 2 4
136 Batteries: Thermoelectric and Photoelectric 0 0 0 2 2 4
152 Resilient Tires and Wheels 0 1 2 1 0 4
177 Weighing Scales 0 2 1 0 1 4
215 Bottles and Jars 0 1 2 1 0 4
234 Selective Cutting (e.g., Punching) 0 1 0 1 2 4
266 Metallurgical Apparatus 1 0 1 1 1 4
336 Inductor Devices 1 1 1 0 1 4
355 Photocopying 2 0 0 1 1 4
367 Communications, Electrical: Acoustic Wave Systems and Devices 1 3 0 0 0 4
384 Bearings 2 0 0 1 1 4
399 Electrophotography 0 2 1 1 0 4
411 Expanded, Threaded, Driven, Headed, Tool-Deformed, or Locked-Threaded Fastener 1 0 0 1 2 4
092 Expansible Chamber Devices 0 1 1 0 1 3
104 Railways 0 0 2 1 0 3
112 Sewing 0 0 0 2 1 3
150 Purses, Wallets, and Protective Covers 0 0 1 1 1 3
162 Paper Making and Fiber Liberation 0 1 0 1 1 3
190 Trunks and Hand-Carried Luggage 0 1 2 0 0 3
237 Heating Systems 0 1 1 1 0 3
267 Spring Devices 0 1 1 1 0 3
299 Mining or In Situ Disintegration of Hard Material 0 1 1 0 1 3
301 Land Vehicles: Wheels and Axles 0 2 0 0 1 3
303 Fluid-Pressure and Analogous Brake Systems 1 2 0 0 0 3
333 Wave Transmission Lines and Networks 1 1 1 0 0 3
416 Fluid Reaction Surfaces (i.e., Impellers) 0 0 0 3 0 3
492 Roll or Roller 0 1 0 1 1 3
504 Plant Protecting and Regulating Compositions 0 0 1 0 2 3
585 Chemistry of Hydrocarbon Compounds 0 1 1 0 1 3
027 Undertaking 1 0 0 0 1 2
048 Gas: Heating and Illuminating 0 0 0 2 0 2
057 Textiles: Spinning, Twisting, and Twining 0 0 0 2 0 2
059 Chain, Staple, and Horseshoe Making 0 0 1 0 1 2
063 Jewelry 1 0 0 0 1 2
068 Textiles: Fluid Treating Apparatus 0 0 1 1 0 2
070 Locks 2 0 0 0 0 2
082 Turning (e.g., for metal working) 0 1 0 0 1 2
087 Textiles: Braiding, Netting, and Lace Making 0 0 0 0 2 2
105 Railway Rolling Stock 0 0 0 1 1 2
117 Single-Crystal, Oriented-Crystal, and Epitaxy Growth Processes; Non-Coating Apparatus Therefor 0 0 2 0 0 2
139 Textiles: Weaving 1 1 0 0 0 2
184 Lubrication 0 0 1 0 1 2
212 Traversing Hoists 0 0 1 0 1 2
277 Seal for a Joint or Juncture 0 1 0 1 0 2
279 Chucks or Sockets 0 0 1 1 0 2
335 Electricity: Magnetically Operated Switches, Magnets, and Electromagnets 0 2 0 0 0 2
368 Horology: Time Measuring Systems or Devices 1 0 1 0 0 2
402 Binder Device Releasably Engaging Aperture or Notch of Sheet 0 0 0 1 1 2
408 Cutting by Use of Rotating Axially Moving Tool 0 0 2 0 0 2
419 Powder Metallurgy Processes 1 0 0 1 0 2
450 Foundation Garments 0 0 0 1 1 2
474 Endless Belt Power Transmission Systems or Components 1 0 0 0 1 2
475 Planetary Gear Transmission Systems or Components 1 0 0 1 0 2
850 Scanning-Probe Techniques or Apparatus; Applications of Scanning-Probe Techniques, e.g., Scanning Probe Microscopy [Spm] 0 0 1 1 0 2
007 Compound Hand Tools 0 1 0 0 0 1
014 Bridges 0 0 0 0 1 1
028 Textiles: Manufacturing 0 0 1 0 0 1
054 Harness for Working Animal 0 1 0 0 0 1
071 Chemistry: Fertilizers 0 0 1 0 0 1
076 Metal Tools and Implements, Making 0 1 0 0 0 1
086 Ammunition and Explosive-Charge Making 0 0 0 0 1 1
131 Tobacco 0 0 1 0 0 1
171 Unearthing Plants or Buried Objects 0 0 0 0 1 1
173 Tool Driving or Impacting 0 0 0 0 1 1
185 Motors: Spring, Weight, or Animal Powered 0 1 0 0 0 1
186 Merchandising 0 1 0 0 0 1
194 Check-Actuated Control Mechanisms 1 0 0 0 0 1
202 Distillation: Apparatus 0 0 0 1 0 1
232 Deposit and Collection Receptacles 0 1 0 0 0 1
238 Railways: Surface Track 0 0 0 1 0 1
281 Books, Strips, and Leaves 0 1 0 0 0 1
332 Modulators 1 0 0 0 0 1
337 Electricity: Electrothermally or Thermally Actuated Switches 0 0 1 0 0 1
388 Electricity: Motor Control Systems 0 0 0 0 1 1
406 Conveyors: Fluid Current 0 1 0 0 0 1
432 Heating 0 0 1 0 0 1
449 Bee Culture (propagating, raising, caring for bees) 0 0 0 0 1 1
460 Crop Threshing or Separating 0 0 1 0 0 1
464 Rotary Shafts, Gudgeons, Housings, and Flexible Couplings for Rotary Shafts 0 0 0 0 1 1
477 Interrelated Power Delivery Controls, Including Engine Control 0 0 0 0 1 1
494 Imperforate Bowl: Centrifugal Separators 0 0 1 0 0 1
505 Superconductor Technology: Apparatus, Material, Process 0 0 0 0 1 1
516 Colloid Systems and Wetting Agents, Subcombinations Thereof, Processes of Making, Stabilizing, Breaking, or Inhibiting 1 0 0 0 0 1
518 Chemistry: Fischer-Tropsch Processes; or Purification or Recovery of Products Thereof 0 1 0 0 0 1
ALL ALL CLASSES 2625 3597 3860 3902 4292 18276



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