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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 2011 - 2015 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 2011 2012 2013 2014 2015 Total
607 Surgery: Light, Thermal, and Electrical Application 362 391 483 510 302 2048
128 Surgery (includes Class 600) 206 208 247 266 206 1133
606 Surgery (instruments) 120 139 141 172 188 760
604 Surgery (Medicators and Receptors) 109 137 142 131 135 654
707 DP: Database and File Management or Data Structures (Data Processing) 124 144 112 106 106 592
800 Multicellular Living Organisms and Unmodified Parts Thereof and Related Processes 68 113 128 175 103 587
424 Drug, Bio-Affecting and Body Treating Compositions (includes Class 514) 106 102 104 120 120 552
360 Dynamic Magnetic Information Storage or Retrieval 61 62 75 163 136 497
623 Prosthesis (i.e., Artificial Body Members), Parts Thereof, or Aids and Accessories Therefor 91 73 89 89 85 427
711 Memory (Electrical Computers and Digital Processing Systems) 77 74 69 54 73 347
370 Multiplex Communications 71 44 50 73 101 339
705 DP: Financial, Business Practice, Management, or Cost/Price Determination (Data Processing) 67 87 85 60 36 335
709 Multicomputer Data Transferring (Electrical Computers and Digital Processing Systems) 58 62 61 86 68 335
365 Static Information Storage and Retrieval 86 87 59 44 41 317
428 Stock Material or Miscellaneous Articles 48 68 65 52 80 313
385 Optical Waveguides 58 58 61 53 71 301
520 Synthetic Resins or Natural Rubbers (includes Classes 520-528) 51 41 65 67 55 279
714 Error Detection/Correction and Fault Detection/Recovery 53 37 37 65 75 267
073 Measuring and Testing 59 43 40 51 64 257
717 DP: Software Development, Installation, and Management (Data Processing) 18 33 39 65 60 215
340 Communications: Electrical 38 38 43 44 48 211
257 Active Solid-State Devices (e.g., Transistors, Solid-State Diodes) 48 42 46 35 37 208
361 Electricity: Electrical Systems and Devices 43 37 47 35 40 202
381 Electrical Audio Signal Processing Systems and Devices 16 35 39 57 55 202
382 Image Analysis 37 48 49 34 32 200
435 Chemistry: Molecular Biology and Microbiology 37 35 37 38 37 184
701 DP: Vehicles, Navigation, and Relative Location (Data Processing) 22 36 36 37 43 174
700 DP: Generic Control Systems or Specific Applications (Data Processing) 41 46 30 20 34 171
029 Metal Working 26 35 28 32 45 166
345 Computer Graphics Processing and Selective Visual Display Systems 36 43 31 21 29 160
055 Gas Separation 38 28 41 29 20 156
718 Virtual Machine Task or Process Management or Task Management/Control (Electrical Computers and Digital Processing Systems) 9 32 42 23 41 147
702 DP: Measuring, Calibrating, or Testing (Data Processing) 35 29 20 28 32 144
052 Static Structures (e.g., Buildings) 27 25 28 34 29 143
713 Support (Electrical Computers and Digital Processing Systems) 25 30 31 26 31 143
369 Dynamic Information Storage or Retrieval 4 8 28 34 66 140
210 Liquid Purification or Separation 39 27 22 20 30 138
715 DP: Presentation Processing of Document, Operator Interface Processing, and Screen Saver Display Processing (Data Processing) 30 30 25 24 29 138
510 Cleaning Compositions for Solid Surfaces, Auxiliary Compositions Therefor, or Processes of Preparing the Compositions 23 27 22 34 29 135
455 Telecommunications 21 19 31 35 27 133
429 Chemistry: Electrical Current Producing Apparatus, Product, and Process 33 26 24 19 29 131
426 Food or Edible Material: Processes, Compositions, and Products 23 33 23 23 28 130
710 Input/Output (Electrical Computers and Digital Data Processing Systems) 33 25 28 20 24 130
726 Information Security 13 27 31 30 29 130
280 Land Vehicles 24 21 22 27 34 128
422 Chemical Apparatus and Process Disinfecting, Deodorizing, Preserving, or Sterilizing 22 31 25 36 12 126
235 Registers (e.g., cash registers, calculators, devices for counting movements of devices, etc.) 33 26 16 28 19 122
427 Coating Processes 18 31 17 32 24 122
324 Electricity: Measuring and Testing 21 18 16 30 36 121
359 Optical: Systems and Elements 17 18 26 23 33 117
532 Organic Compounds (includes Classes 532-570) 20 11 28 27 28 114
264 Plastic and Nonmetallic Article Shaping or Treating: Processes 22 20 19 36 14 111
180 Motor Vehicles 19 22 28 22 18 109
248 Supports (e.g., for holding articles, etc.) 28 14 16 17 33 108
439 Electrical Connectors 25 13 19 18 32 107
438 Semiconductor Device Manufacturing: Process 27 21 23 17 16 104
362 Illumination 11 6 18 32 34 101
348 Television 7 17 22 21 33 100
356 Optics: Measuring and Testing 28 18 18 15 19 98
137 Fluid Handling 11 20 12 22 27 92
712 Processing Architectures and Instruction Processing, e.g., Processors (Electrical Computers and Digital Processing Systems) 31 16 16 9 14 86
375 Pulse or Digital Communications 13 18 19 16 14 80
134 Cleaning and Liquid Contact with Solids 17 16 11 21 13 78
211 Supports: Racks 13 14 15 18 17 77
222 Dispensing (apparatus and process) 8 9 15 25 20 77
404 Road Structure, Process, or Apparatus 6 5 18 18 29 76
040 Card, Picture, or Sign Exhibiting 15 12 10 23 15 75
156 Adhesive Bonding and Miscellaneous Chemical Manufacture 13 7 20 18 17 75
174 Electricity: Conductors and Insulators 14 13 13 12 23 75
206 Special Receptacle or Package 12 12 10 17 22 73
719 Interprogram Communication or Interprocess Communication (Ipc) (Electrical Computers and Digital Processing Systems) 8 9 21 22 11 71
239 Fluid Sprinkling, Spraying, and Diffusing 12 6 11 13 24 66
451 Abrading 6 8 9 23 20 66
062 Refrigeration 15 11 13 13 13 65
716 Computer-Aided Design and Analysis of Circuits and Semiconductor Masks 21 12 17 9 6 65
436 Chemistry: Analytical and Immunological Testing 14 12 15 13 10 64
250 Radiant Energy 15 7 10 17 14 63
398 Optical Communications 12 11 17 12 10 62
015 Brushing, Scrubbing, and General Cleaning 10 8 18 9 11 56
220 Receptacles 10 7 18 16 5 56
060 Power Plants 6 10 12 15 10 53
219 Electric Heating 11 9 11 12 5 48
315 Electric Lamp and Discharge Devices: Systems 7 4 15 12 10 48
473 Games Using Tangible Projectile 6 8 3 12 18 47
095 Gas Separation: Processes 7 6 17 7 7 44
425 Plastic Article or Earthenware Shaping or Treating: Apparatus 15 6 7 8 8 44
706 DP: Artificial Intelligence (Data Processing) 4 7 12 9 12 44
119 Animal Husbandry 11 11 7 9 4 42
703 DP: Structural Design, Modeling, Simulation, and Emulation (Data Processing) 9 9 11 6 7 42
252 Compositions 4 10 10 11 5 40
463 Amusement Devices: Games 5 7 7 11 10 40
482 Exercise Devices 11 9 6 4 10 40
043 Fishing, Trapping, and Vermin Destroying 5 5 10 9 10 39
123 Internal-Combustion Engines 8 6 8 9 8 39
296 Land Vehicles: Bodies and Tops 4 9 10 6 9 38
327 Miscellaneous Active Electrical Nonlinear Devices, Circuits, and Systems 9 7 5 10 6 37
417 Pumps 7 7 7 7 8 36
349 Liquid Crystal Cells, Elements and Systems 10 6 6 6 7 35
198 Conveyors: Power-Driven 6 7 7 8 6 34
374 Thermal Measuring and Testing 1 10 5 6 12 34
434 Education and Demonstration 3 3 9 10 9 34
049 Movable or Removable Closures 1 5 9 9 9 33
307 Electrical Transmission or Interconnection Systems 7 4 6 6 10 33
704 DP: Speech Signal Processing, Linguistics, Language Translation, and Audio Compression/Decompression (Data Processing) 6 5 9 7 6 33
708 Arithmetic Processing and Calculating (Electrical Computers) 1 10 11 4 7 33
414 Material or Article Handling 5 3 5 7 12 32
430 Radiation Imagery Chemistry: Process, Composition, or Product Thereof 3 2 9 10 7 31
118 Coating Apparatus 4 6 7 8 5 30
297 Chairs and Seats 4 4 8 5 9 30
075 Specialized Metallurgical Processes, Compositions for Use Therein, Consolidated Metal Powder Compositions, and Loose Metal Particulate Mixtures 3 5 5 7 9 29
244 Aeronautics and Astronautics 7 7 6 3 6 29
051 Abrasive Tool Making Process, Material, or Composition 9 6 3 6 4 28
053 Package Making 7 5 11 2 3 28
114 Ships 3 6 5 8 6 28
358 Facsimile and Static Presentation Processing 6 3 7 7 5 28
380 Cryptography 8 7 7 4 2 28
433 Dentistry 3 2 7 6 10 28
005 Beds 9 5 3 5 5 27
182 Fire Escape, Ladder, or Scaffold 3 3 4 10 7 27
273 Amusement Devices: Games 4 4 5 8 5 26
372 Coherent Light Generators 0 4 10 8 4 26
405 Hydraulic and Earth Engineering 3 4 3 11 5 26
601 Surgery: Kinesitherapy 6 10 3 6 1 26
002 Apparel 6 6 4 5 4 25
084 Music 5 5 6 3 6 25
096 Gas Separation: Apparatus 5 4 8 3 5 25
205 Electrolysis: Processes, Compositions Used Therein, and Methods of Preparing the Compositions 8 7 3 3 4 25
056 Harvesters 1 8 5 7 3 24
072 Metal Deforming 10 3 4 2 5 24
236 Automatic Temperature and Humidity Regulation 8 4 2 5 5 24
310 Electrical Generator or Motor Structure 9 3 6 3 3 24
342 Communications: Directive Radio Wave Systems and Devices (e.g., Radar, Radio Navigation) 8 5 4 3 4 24
602 Surgery: Splint, Brace, or Bandage 7 4 4 8 1 24
165 Heat Exchange 4 5 3 2 9 23
172 Earth Working 6 3 7 4 3 23
204 Chemistry: Electrical and Wave Energy 1 5 2 10 5 23
216 Etching a Substrate: Processes 2 4 5 7 5 23
320 Electricity: Battery or Capacitor Charging or Discharging 4 4 6 1 8 23
181 Acoustics 5 5 4 5 3 22
229 Envelopes, Wrappers, and Paperboard Boxes 4 3 5 7 3 22
241 Solid Material Comminution or Disintegration 9 2 4 4 3 22
294 Handling: Hand and Hoist-Line Implements 5 5 3 4 5 22
312 Supports: Cabinet Structure 2 4 3 7 6 22
083 Cutting 3 5 5 2 6 21
269 Work Holders 4 2 3 3 9 21
326 Electronic Digital Logic Circuitry 3 4 13 1 0 21
347 Incremental Printing of Symbolic Information 4 4 5 3 5 21
343 Communications: Radio Wave Antennas 3 2 6 3 6 20
024 Buckles, Buttons, Clasps, Etc. 2 5 3 3 6 19
047 Plant Husbandry 5 4 2 4 4 19
106 Compositions: Coating or Plastic 3 1 4 6 5 19
126 Stoves and Furnaces 4 1 2 8 4 19
192 Clutches and Power-Stop Control 4 3 3 2 7 19
366 Agitating (e.g., of articles and materials) 5 4 5 4 1 19
033 Geometrical Instruments 7 2 3 2 4 18
042 Firearms 3 2 3 5 5 18
074 Machine Element or Mechanism 1 6 4 3 4 18
251 Valves and Valve Actuation 3 3 3 3 6 18
331 Oscillators 3 4 1 4 6 18
502 Catalyst, Solid Sorbent, or Support Therefor: Product or Process of Making 4 3 2 5 4 18
530 Chemistry: Natural Resins or Derivatives; Peptides or Proteins; Lignins or Reaction Products Thereof 3 3 9 2 1 18
030 Cutlery 6 5 3 1 2 17
101 Printing 2 2 2 4 7 17
135 Tent, Canopy, Umbrella, or Cane 6 4 4 2 1 17
224 Package and Article Carriers 3 1 1 6 6 17
242 Winding, Tensioning, or Guiding 4 2 3 3 5 17
261 Gas and Liquid Contact Apparatus 2 3 5 2 5 17
290 Prime-Mover Dynamo Plants 5 1 3 4 4 17
313 Electric Lamp and Discharge Devices 4 3 6 4 0 17
431 Combustion 3 3 6 4 1 17
125 Stone Working 3 4 1 4 4 16
141 Fluent Material Handling, with Receiver or Receiver Coacting Means 0 4 5 3 4 16
285 Pipe Joints or Couplings 1 3 5 5 2 16
318 Electricity: Motive Power Systems 5 2 3 5 1 16
396 Photography 6 6 2 2 0 16
008 Bleaching and Dyeing; Fluid Treatment and Chemical Modification of Textiles and Fibers 2 3 2 6 2 15
037 Excavating 5 2 2 5 1 15
102 Ammunition and Explosives 0 2 5 2 6 15
299 Mining or In Situ Disintegration of Hard Material 1 0 1 9 4 15
379 Telephonic Communications 5 1 5 3 1 15
403 Joints and Connections 3 2 5 2 3 15
034 Drying and Gas or Vapor Contact with Solids 5 2 2 2 3 14
124 Mechanical Guns and Projectors 3 1 2 3 5 14
136 Batteries: Thermoelectric and Photoelectric 0 2 2 6 4 14
254 Implements or Apparatus for Applying Pushing or Pulling Force 6 3 1 3 1 14
330 Amplifiers 6 1 3 1 3 14
442 Fabric (Woven, Knitted, or Nonwoven Textile or Cloth, Etc.) 5 0 3 1 5 14
725 Interactive Video Distribution Systems 3 2 2 5 2 14
036 Boots, Shoes, and Leggings 1 2 3 5 2 13
160 Flexible or Portable Closure, Partition, or Panel 2 2 2 5 2 13
227 Elongated-Member-Driving Apparatus 3 1 2 4 3 13
016 Miscellaneous Hardware (e.g., Bushing, Carpet Fastener, Caster, Door Closer, Panel Hanger, Attachable or Adjunct Handle, Hinge, Window Sash Balance, Etc.) 3 1 4 2 2 12
044 Fuel and Related Compositions 0 1 5 5 1 12
209 Classifying, Separating, and Assorting Solids 4 3 2 2 1 12
341 Coded Data Generation or Conversion 2 2 1 4 3 12
383 Flexible Bags 1 4 4 1 2 12
446 Amusement Devices: Toys 3 0 3 1 5 12
081 Tools 0 1 3 6 1 11
138 Pipes and Tubular Conduits 3 2 3 3 0 11
169 Fire Extinguishers 1 2 3 3 2 11
323 Electricity: Power Supply or Regulation Systems 2 4 2 2 1 11
363 Electric Power Conversion Systems 3 1 3 3 1 11
378 X-Ray or Gamma Ray Systems or Devices 3 0 1 3 4 11
401 Coating Implements with Material Supply 1 3 3 3 1 11
440 Marine Propulsion 2 2 1 2 4 11
099 Foods and Beverages: Apparatus 1 1 6 1 1 10
415 Rotary Kinetic Fluid Motors or Pumps 3 2 1 1 3 10
423 Chemistry of Inorganic Compounds 0 5 2 1 2 10
089 Ordnance 2 2 2 3 0 9
108 Horizontally Supported Planar Surfaces 1 2 3 1 2 9
111 Planting 0 1 2 4 2 9
166 Wells (shafts or deep borings in the earth, e.g., for oil and gas) 0 2 2 2 3 9
215 Bottles and Jars 2 1 0 3 3 9
322 Electricity: Single Generator Systems 3 0 4 1 1 9
508 Solid Anti-Friction Devices, Materials Therefor, Lubricant or Separant Compositions for Moving Solid Surfaces, and Miscellaneous Mineral Oil Compositions 1 2 3 2 1 9
149 Explosive and Thermic Compositions or Charges 1 4 3 0 0 8
200 Electricity: Circuit Makers and Breakers 5 0 2 1 0 8
246 Railway Switches and Signals 1 2 2 1 2 8
292 Closure Fasteners 2 0 2 0 4 8
353 Optics: Image Projectors 2 3 1 1 1 8
400 Typewriting Machines 2 0 1 4 1 8
420 Alloys or Metallic Compositions 1 1 2 2 2 8
452 Butchering 2 1 2 1 2 8
472 Amusement Devices 2 1 2 1 2 8
493 Manufacturing Container or Tube From Paper; or Other Manufacturing From a Sheet or Web 2 1 2 3 0 8
004 Baths, Closets, Sinks, and Spittoons 2 0 1 0 4 7
065 Glass Manufacturing 4 2 0 1 0 7
091 Motors: Expansible Chamber Type 2 0 1 0 4 7
132 Toilet 3 0 0 3 1 7
144 Woodworking 3 1 0 0 3 7
188 Brakes 0 2 2 1 2 7
221 Article Dispensing 3 1 1 1 1 7
256 Fences 2 3 2 0 0 7
351 Optics: Eye Examining, Vision Testing and Correcting 0 2 2 1 2 7
392 Electric Resistance Heating Devices 1 1 3 2 0 7
411 Expanded, Threaded, Driven, Headed, Tool-Deformed, or Locked-Threaded Fastener 0 1 2 2 2 7
445 Electric Lamp or Space Discharge Component or Device Manufacturing 3 1 2 1 0 7
014 Bridges 0 0 1 2 3 6
048 Gas: Heating and Illuminating 0 2 0 4 0 6
116 Signals and Indicators 1 0 2 2 1 6
122 Liquid Heaters and Vaporizers 0 1 2 3 0 6
148 Metal Treatment 2 2 0 1 1 6
175 Boring or Penetrating the Earth 2 1 1 1 1 6
277 Seal for a Joint or Juncture 0 1 0 2 3 6
301 Land Vehicles: Wheels and Axles 0 0 1 2 3 6
418 Rotary Expansible Chamber Devices 0 3 0 1 2 6
441 Buoys, Rafts, and Aquatic Devices 0 3 1 1 1 6
454 Ventilation 1 2 0 2 1 6
475 Planetary Gear Transmission Systems or Components 0 1 0 3 2 6
506 Combinatorial Chemistry Technology: Method, Library, Apparatus 4 0 0 0 2 6
164 Metal Founding 1 1 1 2 0 5
177 Weighing Scales 1 0 1 1 2 5
249 Static Molds 1 2 0 2 0 5
267 Spring Devices 1 1 0 2 1 5
271 Sheet Feeding or Delivering 1 1 1 2 0 5
283 Printed Matter 2 0 1 1 1 5
305 Wheel Substitutes for Land Vehicles 2 1 0 1 1 5
333 Wave Transmission Lines and Networks 1 0 0 2 2 5
386 Motion Video Signal Processing for Recording or Reproducing 1 0 2 0 2 5
410 Freight Accommodation On Freight Carrier 2 1 0 1 1 5
477 Interrelated Power Delivery Controls, Including Engine Control 0 0 1 3 1 5
504 Plant Protecting and Regulating Compositions 1 0 2 0 2 5
507 Earth Boring, Well Treating, and Oil Field Chemistry 0 3 1 1 0 5
585 Chemistry of Hydrocarbon Compounds 1 0 1 3 0 5
087 Textiles: Braiding, Netting, and Lace Making 0 0 2 2 0 4
100 Presses 1 2 0 0 1 4
104 Railways 2 1 0 0 1 4
110 Furnaces 2 2 0 0 0 4
112 Sewing 0 2 1 0 1 4
152 Resilient Tires and Wheels 2 1 0 1 0 4
162 Paper Making and Fiber Liberation 0 1 1 1 1 4
228 Metal Fusion Bonding 0 1 1 1 1 4
266 Metallurgical Apparatus 1 1 1 0 1 4
279 Chucks or Sockets 1 1 0 2 0 4
298 Land Vehicles: Dumping 1 2 1 0 0 4
384 Bearings 0 1 1 2 0 4
399 Electrophotography 1 1 0 1 1 4
416 Fluid Reaction Surfaces (i.e., Impellers) 0 3 0 0 1 4
720 Dynamic Optical Information Storage or Retrieval 0 1 3 0 0 4
057 Textiles: Spinning, Twisting, and Twining 0 2 0 0 1 3
068 Textiles: Fluid Treating Apparatus 1 1 0 0 1 3
086 Ammunition and Explosive-Charge Making 0 0 1 1 1 3
092 Expansible Chamber Devices 1 0 1 1 0 3
150 Purses, Wallets, and Protective Covers 1 1 1 0 0 3
184 Lubrication 1 0 1 1 0 3
190 Trunks and Hand-Carried Luggage 2 0 0 1 0 3
212 Traversing Hoists 1 0 1 0 1 3
223 Apparel Apparatus 1 1 1 0 0 3
234 Selective Cutting (e.g., Punching) 0 1 2 0 0 3
237 Heating Systems 1 1 0 1 0 3
281 Books, Strips, and Leaves 0 0 0 2 1 3
336 Inductor Devices 1 0 1 1 0 3
338 Electrical Resistors 1 2 0 0 0 3
355 Photocopying 0 1 1 1 0 3
367 Communications, Electrical: Acoustic Wave Systems and Devices 0 0 0 2 1 3
408 Cutting by Use of Rotating Axially Moving Tool 2 0 0 1 0 3
450 Foundation Garments 0 1 1 0 1 3
474 Endless Belt Power Transmission Systems or Components 0 0 1 1 1 3
501 Compositions: Ceramic 1 0 1 0 1 3
027 Undertaking 0 0 1 1 0 2
059 Chain, Staple, and Horseshoe Making 1 0 1 0 0 2
063 Jewelry 0 0 1 1 0 2
070 Locks 0 0 0 0 2 2
071 Chemistry: Fertilizers 1 0 0 0 1 2
082 Turning (e.g., for metal working) 0 0 1 0 1 2
105 Railway Rolling Stock 0 1 1 0 0 2
117 Single-Crystal, Oriented-Crystal, and Epitaxy Growth Processes; Non-Coating Apparatus Therefor 2 0 0 0 0 2
127 Sugar, Starch, and Carbohydrates 1 1 0 0 0 2
131 Tobacco 1 0 0 1 0 2
171 Unearthing Plants or Buried Objects 0 0 1 1 0 2
173 Tool Driving or Impacting 0 0 1 1 0 2
203 Distillation: Processes, Separatory 0 0 0 0 2 2
238 Railways: Surface Track 0 1 0 0 1 2
402 Binder Device Releasably Engaging Aperture or Notch of Sheet 0 1 1 0 0 2
432 Heating 1 0 0 0 1 2
464 Rotary Shafts, Gudgeons, Housings, and Flexible Couplings for Rotary Shafts 0 0 1 0 1 2
492 Roll or Roller 0 1 1 0 0 2
588 Hazardous or Toxic Waste Destruction or Containment 0 0 0 1 1 2
850 Scanning-Probe Techniques or Apparatus; Applications of Scanning-Probe Techniques, e.g., Scanning Probe Microscopy [Spm] 1 1 0 0 0 2
007 Compound Hand Tools 0 0 0 0 1 1
028 Textiles: Manufacturing 1 0 0 0 0 1
076 Metal Tools and Implements, Making 0 0 0 0 1 1
168 Farriery 0 0 0 0 1 1
187 Elevator, Industrial Lift Truck, or Stationary Lift for Vehicle 0 0 0 1 0 1
193 Conveyors, Chutes, Skids, Guides, and Ways 1 0 0 0 0 1
202 Distillation: Apparatus 0 1 0 0 0 1
225 Severing by Tearing or Breaking 0 0 0 1 0 1
289 Knots and Knot Tying 0 0 0 0 1 1
337 Electricity: Electrothermally or Thermally Actuated Switches 1 0 0 0 0 1
346 Recorders 0 0 0 1 0 1
368 Horology: Time Measuring Systems or Devices 1 0 0 0 0 1
388 Electricity: Motor Control Systems 0 0 1 0 0 1
406 Conveyors: Fluid Current 0 0 0 0 1 1
409 Gear Cutting, Milling, or Planing 0 0 0 1 0 1
419 Powder Metallurgy Processes 0 1 0 0 0 1
449 Bee Culture (propagating, raising, caring for bees) 0 0 1 0 0 1
460 Crop Threshing or Separating 1 0 0 0 0 1
483 Tool Changing 0 0 0 0 1 1
494 Imperforate Bowl: Centrifugal Separators 1 0 0 0 0 1
505 Superconductor Technology: Apparatus, Material, Process 0 0 1 0 0 1
518 Chemistry: Fischer-Tropsch Processes; or Purification or Recovery of Products Thereof 0 0 0 1 0 1
ALL ALL CLASSES 3860 3902 4292 4626 4394 21074



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