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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 2006 - 2010 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 either by year of patent grant or by year of patent application.
Class Class Title 2006 2007 2008 2009 2010 Total
607 Surgery: Light, Thermal, and Electrical Application 197 222 150 206 349 1124
128 Surgery (includes Class 600) 127 109 77 99 150 562
707 DP: Database and File Management or Data Structures (Data Processing) 74 45 62 77 110 368
360 Dynamic Magnetic Information Storage or Retrieval 136 64 60 47 57 364
606 Surgery (instruments) 60 73 48 65 116 362
385 Optical Waveguides 39 53 72 67 73 304
800 Multicellular Living Organisms and Unmodified Parts Thereof and Related Processes 39 60 56 52 82 289
604 Surgery (Medicators and Receptors) 49 37 39 57 102 284
711 Memory (Electrical Computers and Digital Processing Systems) 56 53 47 61 49 266
428 Stock Material or Miscellaneous Articles 69 40 50 28 59 246
370 Multiplex Communications 33 22 53 49 85 242
073 Measuring and Testing 50 48 48 45 50 241
709 Multicomputer Data Transferring (Electrical Computers and Digital Processing Systems) 27 31 43 59 72 232
714 Error Detection/Correction and Fault Detection/Recovery 39 41 47 48 54 229
424 Drug, Bio-Affecting and Body Treating Compositions (includes Class 514) 61 40 25 41 61 228
623 Prosthesis (i.e., Artificial Body Members), Parts Thereof, or Aids and Accessories Therefor 46 33 36 49 57 221
520 Synthetic Resins or Natural Rubbers (includes Classes 520-528) 51 41 40 33 55 220
340 Communications: Electrical 46 26 44 40 44 200
361 Electricity: Electrical Systems and Devices 27 33 51 47 40 198
439 Electrical Connectors 40 39 39 36 27 181
705 DP: Financial, Business Practice, Management, or Cost/Price Determination (Data Processing) 14 22 29 32 66 163
430 Radiation Imagery Chemistry: Process, Composition, or Product Thereof 63 46 31 13 9 162
710 Input/Output (Electrical Computers and Digital Processing Systems) 44 26 30 26 35 161
029 Metal Working 34 24 21 32 37 148
365 Static Information Storage and Retrieval 23 24 25 21 51 144
435 Chemistry: Molecular Biology and Microbiology 26 24 24 24 45 143
257 Active Solid-State Devices (e.g., Transistors, Solid-State Diodes) 21 27 28 16 49 141
702 DP: Measuring, Calibrating, or Testing (Data Processing) 27 19 26 35 24 131
324 Electricity: Measuring and Testing 29 30 20 27 22 128
356 Optics: Measuring and Testing 31 22 23 18 31 125
210 Liquid Purification or Separation 13 17 17 31 32 110
359 Optical: Systems and Elements 33 24 24 16 13 110
700 DP: Generic Control Systems or Specific Applications (Data Processing) 20 13 20 20 37 110
235 Registers (e.g., cash registers, calculators, devices for counting movements of devices, etc.) 14 19 25 21 28 107
713 Support (Electrical Computers and Digital Processing Systems) 23 17 25 17 24 106
438 Semiconductor Device Manufacturing: Process 9 26 23 23 23 104
362 Illumination 21 27 20 16 15 99
426 Food or Edible Material: Processes, Compositions, and Products 23 16 20 16 24 99
455 Telecommunications 21 10 16 30 18 95
717 DP: Software Development, Installation, and Management (Data Processing) 34 20 17 11 13 95
264 Plastic and Nonmetallic Article Shaping or Treating: Processes 22 15 17 12 27 93
382 Image Analysis 24 12 13 19 21 89
052 Static Structures (e.g., Buildings) 21 13 13 17 24 88
280 Land Vehicles 15 21 16 15 21 88
055 Gas Separation 15 18 22 15 17 87
180 Motor Vehicles 23 6 13 18 27 87
248 Supports (e.g., for holding articles, etc.) 18 19 15 15 19 86
715 DP: Presentation Processing of Document, Operator Interface Processing, and Screen Saver Display Processing (Data Processing) 18 20 13 19 15 85
427 Coating Processes 14 15 9 17 26 81
429 Chemistry: Electrical Current Producing Apparatus, Product, and Process 8 10 9 15 37 79
532 Organic Compounds (includes Classes 532-570) 18 14 16 9 21 78
701 DP: Vehicles, Navigation, and Relative Location (Data Processing) 14 15 13 15 21 78
451 Abrading 19 23 15 11 9 77
422 Chemical Apparatus and Process Disinfecting, Deodorizing, Preserving, or Sterilizing 10 17 11 15 23 76
345 Computer Graphics Processing and Selective Visual Display Systems 15 13 11 14 22 75
716 Computer-Aided Design and Analysis of Circuits and Semiconductor Masks 13 15 16 15 14 73
137 Fluid Handling 12 10 16 16 18 72
250 Radiant Energy 17 12 19 11 13 72
156 Adhesive Bonding and Miscellaneous Chemical Manufacture 19 19 7 5 18 68
482 Exercise Devices 13 5 17 14 18 67
174 Electricity: Conductors and Insulators 16 15 9 13 13 66
510 Cleaning Compositions for Solid Surfaces, Auxiliary Compositions Therefor, or Processes of Preparing the Compositions 14 12 10 13 17 66
375 Pulse or Digital Communications 6 10 13 15 21 65
206 Special Receptacle or Package 10 8 14 12 16 60
703 DP: Structural Design, Modeling, Simulation, and Emulation (Data Processing) 10 11 10 8 15 54
327 Miscellaneous Active Electrical Nonlinear Devices, Circuits, and Systems 8 15 5 15 7 50
425 Plastic Article or Earthenware Shaping or Treating: Apparatus 13 7 12 6 12 50
219 Electric Heating 8 9 9 5 18 49
239 Fluid Sprinkling, Spraying, and Diffusing 14 6 6 6 17 49
062 Refrigeration 9 9 9 4 16 47
712 Processing Architectures and Instruction Processing, e.g., Processors (Electrical Computers and Digital Processing Systems) 4 0 11 8 24 47
342 Communications: Directive Radio Wave Systems and Devices (e.g., Radar, Radio Navigation) 7 3 11 16 9 46
718 Virtual Machine Task or Process Management or Task Management/Control (Electrical Computers and Digital Processing Systems) 10 5 7 12 10 44
043 Fishing, Trapping, and Vermin Destroying 8 12 3 9 11 43
114 Ships 14 12 9 6 2 43
015 Brushing, Scrubbing, and General Cleaning 13 5 6 6 12 42
381 Electrical Audio Signal Processing Systems and Devices 4 9 10 8 10 41
040 Card, Picture, or Sign Exhibiting 3 11 8 6 11 39
172 Earth Working 10 6 5 9 9 39
198 Conveyors: Power-Driven 10 9 7 8 5 39
414 Material or Article Handling 10 8 10 6 5 39
060 Power Plants 5 6 7 8 12 38
119 Animal Husbandry 7 4 12 9 6 38
473 Games Using Tangible Projectile 9 10 9 3 7 38
726 Information Security 3 10 5 8 12 38
326 Electronic Digital Logic Circuitry 4 11 11 4 7 37
252 Compositions 9 7 6 8 5 35
379 Telephonic Communications 10 7 8 6 4 35
436 Chemistry: Analytical and Immunological Testing 2 7 5 13 8 35
095 Gas Separation: Processes 10 3 7 3 10 33
398 Optical Communications 10 3 4 4 12 33
405 Hydraulic and Earth Engineering 10 3 8 6 6 33
056 Harvesters 8 2 8 6 8 32
602 Surgery: Splint, Brace, or Bandage 12 2 7 6 5 32
297 Chairs and Seats 11 2 8 7 3 31
005 Beds 6 6 4 8 6 30
053 Package Making 6 4 9 5 6 30
134 Cleaning and Liquid Contact with Solids 7 8 2 8 5 30
719 Interprogram Communication or Interprocess Communication (Ipc) (Electrical Computers and Digital Processing Systems) 5 6 5 7 7 30
033 Geometrical Instruments 8 6 6 8 1 29
296 Land Vehicles: Bodies and Tops 9 1 6 4 9 29
358 Facsimile and Static Presentation Processing 8 5 6 5 5 29
530 Chemistry: Natural Resins or Derivatives; Peptides or Proteins; Lignins or Reaction Products Thereof 4 8 6 4 7 29
051 Abrasive Tool Making Process, Material, or Composition 1 11 4 12 0 28
417 Pumps 11 2 1 7 7 28
072 Metal Deforming 9 7 3 1 7 27
118 Coating Apparatus 7 5 3 5 7 27
211 Supports: Racks 5 7 3 4 8 27
331 Oscillators 5 3 7 7 5 27
404 Road Structure, Process, or Apparatus 4 3 6 5 8 26
433 Dentistry 5 6 4 4 7 26
236 Automatic Temperature and Humidity Regulation 4 5 1 4 11 25
318 Electricity: Motive Power Systems 9 2 3 5 6 25
349 Liquid Crystal Cells, Elements and Systems 7 3 5 2 8 25
372 Coherent Light Generators 11 5 5 1 3 25
141 Fluent Material Handling, with Receiver or Receiver Coacting Means 9 4 2 1 8 24
341 Coded Data Generation or Conversion 7 3 4 6 4 24
706 DP: Artificial Intelligence (Data Processing) 5 2 7 5 5 24
348 Television 3 3 7 6 4 23
106 Compositions: Coating or Plastic 8 3 3 5 3 22
123 Internal-Combustion Engines 6 4 5 3 4 22
273 Amusement Devices: Games 4 4 5 6 3 22
307 Electrical Transmission or Interconnection Systems 4 2 4 6 6 22
601 Surgery: Kinesitherapy 2 1 6 6 7 22
024 Buckles, Buttons, Clasps, Etc. 3 6 2 2 7 20
037 Excavating 2 3 2 7 6 20
220 Receptacles 1 4 3 8 4 20
222 Dispensing (apparatus and process) 2 5 5 2 6 20
310 Electrical Generator or Motor Structure 2 4 2 8 4 20
401 Coating Implements with Material Supply 5 4 3 3 5 20
704 DP: Speech Signal Processing, Linguistics, Language Translation, and Audio Compression/Decompression (Data Processing) 1 1 7 5 6 20
102 Ammunition and Explosives 4 5 4 3 3 19
343 Communications: Radio Wave Antennas 4 4 6 2 3 19
366 Agitating (e.g., of articles and materials) 2 6 6 1 4 19
096 Gas Separation: Apparatus 3 4 3 3 5 18
294 Handling: Hand and Hoist-Line Implements 3 1 6 1 7 18
347 Incremental Printing of Symbolic Information 5 5 6 1 1 18
002 Apparel 4 3 2 0 8 17
251 Valves and Valve Actuation 7 1 4 0 5 17
254 Implements or Apparatus for Applying Pushing or Pulling Force 2 3 2 6 4 17
285 Pipe Joints or Couplings 3 2 5 3 4 17
434 Education and Demonstration 3 7 3 3 1 17
084 Music 4 1 1 7 3 16
241 Solid Material Comminution or Disintegration 3 5 2 3 3 16
351 Optics: Eye Examining, Vision Testing and Correcting 5 1 4 3 3 16
353 Optics: Image Projectors 2 4 3 3 4 16
374 Thermal Measuring and Testing 6 2 3 1 4 16
501 Compositions: Ceramic 4 3 1 5 3 16
708 Arithmetic Processing and Calculating (Electrical Computers) 4 2 2 4 4 16
101 Printing 0 3 3 7 2 15
165 Heat Exchange 8 2 3 2 0 15
204 Chemistry: Electrical and Wave Energy 1 5 3 1 5 15
205 Electrolysis: Processes, Compositions Used Therein, and Methods of Preparing the Compositions 3 3 2 2 5 15
242 Winding, Tensioning, or Guiding 2 6 2 2 3 15
442 Fabric (Woven, Knitted, or Nonwoven Textile or Cloth, Etc.) 3 2 2 2 6 15
725 Interactive Video Distribution Systems 3 3 2 3 4 15
126 Stoves and Furnaces 1 4 3 2 4 14
181 Acoustics 0 3 1 6 4 14
229 Envelopes, Wrappers, and Paperboard Boxes 2 0 2 5 5 14
244 Aeronautics and Astronautics 4 1 3 3 3 14
290 Prime-Mover Dynamo Plants 1 2 1 4 6 14
313 Electric Lamp and Discharge Devices 4 6 3 1 0 14
369 Dynamic Information Storage or Retrieval 4 1 5 1 3 14
396 Photography 1 4 2 3 4 14
399 Electrophotography 8 2 2 0 2 14
049 Movable or Removable Closures 2 1 2 1 7 13
070 Locks 1 7 3 2 0 13
192 Clutches and Power-Stop Control 3 3 1 3 3 13
216 Etching a Substrate: Processes 4 2 5 2 0 13
221 Article Dispensing 6 2 2 2 1 13
330 Amplifiers 3 2 5 1 2 13
380 Cryptography 0 2 4 3 4 13
431 Combustion 2 5 2 2 2 13
440 Marine Propulsion 4 1 2 4 2 13
463 Amusement Devices: Games 2 2 3 3 3 13
036 Boots, Shoes, and Leggings 1 1 2 1 7 12
182 Fire Escape, Ladder, or Scaffold 4 6 2 0 0 12
200 Electricity: Circuit Makers and Breakers 5 4 0 3 0 12
446 Amusement Devices: Toys 5 3 1 2 1 12
034 Drying and Gas or Vapor Contact with Solids 5 2 3 0 1 11
074 Machine Element or Mechanism 2 1 2 2 4 11
144 Woodworking 1 2 3 2 3 11
188 Brakes 4 1 2 1 3 11
271 Sheet Feeding or Delivering 3 2 2 1 3 11
400 Typewriting Machines 4 2 3 0 2 11
089 Ordnance 2 3 1 3 1 10
132 Toilet 3 0 4 3 0 10
164 Metal Founding 3 3 0 1 3 10
261 Gas and Liquid Contact Apparatus 3 2 0 1 4 10
335 Electricity: Magnetically Operated Switches, Magnets, and Electromagnets 4 1 3 0 2 10
441 Buoys, Rafts, and Aquatic Devices 5 2 0 0 3 10
720 Dynamic Optical Information Storage or Retrieval 3 2 2 0 3 10
008 Bleaching and Dyeing; Fluid Treatment and Chemical Modification of Textiles and Fibers 1 2 3 0 3 9
081 Tools 4 3 0 0 2 9
083 Cutting 2 4 0 1 2 9
100 Presses 3 1 3 1 1 9
124 Mechanical Guns and Projectors 2 1 1 2 3 9
169 Fire Extinguishers 1 1 4 2 1 9
333 Wave Transmission Lines and Networks 3 2 2 1 1 9
392 Electric Resistance Heating Devices 2 1 1 2 3 9
403 Joints and Connections 4 1 0 2 2 9
423 Chemistry of Inorganic Compounds 0 5 2 1 1 9
508 Solid Anti-Friction Devices, Materials Therefor, Lubricant or Separant Compositions for Moving Solid Surfaces, and Miscellaneous Mineral Oil Compositions 2 0 2 2 3 9
116 Signals and Indicators 2 2 0 1 3 8
160 Flexible or Portable Closure, Partition, or Panel 0 6 0 0 2 8
177 Weighing Scales 2 1 3 0 2 8
292 Closure Fasteners 3 1 3 1 0 8
315 Electric Lamp and Discharge Devices: Systems 3 2 0 1 2 8
336 Inductor Devices 5 1 0 1 1 8
338 Electrical Resistors 5 1 0 0 2 8
452 Butchering 1 1 3 1 2 8
474 Endless Belt Power Transmission Systems or Components 4 2 1 1 0 8
030 Cutlery 4 3 0 0 0 7
042 Firearms 1 0 1 3 2 7
075 Specialized Metallurgical Processes, Compositions for Use Therein, Consolidated Metal Powder Compositions, and Loose Metal Particulate Mixtures 0 0 2 2 3 7
099 Foods and Beverages: Apparatus 2 0 1 1 3 7
125 Stone Working 6 0 1 0 0 7
228 Metal Fusion Bonding 3 0 0 1 3 7
256 Fences 0 0 3 1 3 7
277 Seal for a Joint or Juncture 4 1 1 0 1 7
323 Electricity: Power Supply or Regulation Systems 1 3 3 0 0 7
363 Electric Power Conversion Systems 2 1 1 0 3 7
367 Communications, Electrical: Acoustic Wave Systems and Devices 2 0 1 1 3 7
475 Planetary Gear Transmission Systems or Components 2 2 2 1 0 7
503 Record Receiver Having Plural Interactive Leaves or a Colorless Color Former, Method of Use, or Developer Therefor 2 4 1 0 0 7
016 Miscellaneous Hardware 0 1 0 1 4 6
065 Glass Manufacturing 0 4 0 2 0 6
135 Tent, Canopy, Umbrella, or Cane 1 1 0 2 2 6
138 Pipes and Tubular Conduits 0 1 2 2 1 6
209 Classifying, Separating, and Assorting Solids 0 2 2 2 0 6
249 Static Molds 1 2 0 1 2 6
355 Photocopying 2 0 2 2 0 6
445 Electric Lamp or Space Discharge Component or Device Manufacturing 2 4 0 0 0 6
493 Manufacturing Container or Tube From Paper; or Other Manufacturing From a Sheet or Web 3 1 0 0 2 6
502 Catalyst, Solid Sorbent, or Support Therefor: Product or Process of Making 1 1 0 1 3 6
004 Baths, Closets, Sinks, and Spittoons 1 2 1 1 0 5
092 Expansible Chamber Devices 0 0 4 0 1 5
175 Boring or Penetrating the Earth 0 0 1 0 4 5
224 Package and Article Carriers 3 1 0 0 1 5
227 Elongated-Member-Driving Apparatus 0 2 0 0 3 5
269 Work Holders 1 3 1 0 0 5
303 Fluid-Pressure and Analogous Brake Systems 1 1 0 1 2 5
320 Electricity: Battery or Capacitor Charging or Discharging 1 1 0 3 0 5
378 X-Ray or Gamma Ray Systems or Devices 1 0 1 0 3 5
383 Flexible Bags 1 1 1 1 1 5
454 Ventilation 3 0 0 2 0 5
047 Plant Husbandry 0 1 0 2 1 4
063 Jewelry 2 1 0 1 0 4
104 Railways 0 1 3 0 0 4
108 Horizontally Supported Planar Surfaces 1 2 0 0 1 4
111 Planting 1 0 2 1 0 4
122 Liquid Heaters and Vaporizers 0 0 2 1 1 4
127 Sugar, Starch, and Carbohydrates 0 1 0 0 3 4
166 Wells (shafts or deep borings in the earth, e.g., for oil and gas) 1 1 1 0 1 4
193 Conveyors, Chutes, Skids, Guides, and Ways 0 0 0 3 1 4
267 Spring Devices 1 2 0 0 1 4
281 Books, Strips, and Leaves 1 0 2 0 1 4
283 Printed Matter 0 2 0 2 0 4
298 Land Vehicles: Dumping 0 0 1 1 2 4
301 Land Vehicles: Wheels and Axles 1 1 0 0 2 4
305 Wheel Substitutes for Land Vehicles 0 2 0 0 2 4
312 Supports: Cabinet Structure 2 0 1 0 1 4
384 Bearings 1 1 0 2 0 4
415 Rotary Kinetic Fluid Motors or Pumps 0 1 2 0 1 4
418 Rotary Expansible Chamber Devices 1 1 0 1 1 4
506 Combinatorial Chemistry Technology: Method, Library, Apparatus 0 0 1 2 1 4
518 Chemistry: Fischer-Tropsch Processes; or Purification or Recovery of Products Thereof 0 2 1 0 1 4
001 ** Classification Undetermined ** 0 0 0 0 3 3
110 Furnaces 1 1 0 0 1 3
148 Metal Treatment 0 0 2 0 1 3
162 Paper Making and Fiber Liberation 1 0 1 0 1 3
215 Bottles and Jars 1 0 1 0 1 3
223 Apparel Apparatus 0 0 0 0 3 3
232 Deposit and Collection Receptacles 1 0 1 0 1 3
386 Motion Video Signal Processing for Recording or Reproducing 0 0 0 2 1 3
410 Freight Accommodation On Freight Carrier 0 1 0 0 2 3
420 Alloys or Metallic Compositions 0 0 1 1 1 3
472 Amusement Devices 1 1 1 0 0 3
477 Interrelated Power Delivery Controls, Including Engine Control 0 1 2 0 0 3
516 Colloid Systems and Wetting Agents, Subcombinations Thereof, Processes of Making, Stabilizing, Breaking, or Inhibiting 0 1 1 1 0 3
027 Undertaking 0 1 0 1 0 2
054 Harness for Working Animal 0 1 0 0 1 2
057 Textiles: Spinning, Twisting, and Twining 2 0 0 0 0 2
071 Chemistry: Fertilizers 1 0 1 0 0 2
112 Sewing 1 1 0 0 0 2
117 Single-Crystal, Oriented-Crystal, and Epitaxy Growth Processes; Non-Coating Apparatus Therefor 0 0 2 0 0 2
139 Textiles: Weaving 0 0 0 1 1 2
140 Wireworking 1 0 1 0 0 2
171 Unearthing Plants or Buried Objects 2 0 0 0 0 2
225 Severing by Tearing or Breaking 1 0 1 0 0 2
266 Metallurgical Apparatus 0 1 0 1 0 2
322 Electricity: Single Generator Systems 0 0 0 2 0 2
368 Horology: Time Measuring Systems or Devices 1 0 0 1 0 2
406 Conveyors: Fluid Current 1 0 0 0 1 2
407 Cutters, for Shaping 1 0 1 0 0 2
408 Cutting by Use of Rotating Axially Moving Tool 1 1 0 0 0 2
416 Fluid Reaction Surfaces (i.e., Impellers) 1 1 0 0 0 2
507 Earth Boring, Well Treating, and Oil Field Chemistry 0 0 0 1 1 2
585 Chemistry of Hydrocarbon Compounds 0 1 0 0 1 2
007 Compound Hand Tools 0 0 0 0 1 1
026 Textiles: Cloth Finishing 1 0 0 0 0 1
044 Fuel and Related Compositions 0 0 0 0 1 1
048 Gas: Heating and Illuminating 0 0 1 0 0 1
059 Chain, Staple, and Horseshoe Making 0 1 0 0 0 1
076 Metal Tools and Implements, Making 0 0 0 0 1 1
082 Turning (e.g., for metal working) 0 0 0 0 1 1
086 Ammunition and Explosive-Charge Making 0 0 1 0 0 1
091 Motors: Expansible Chamber Type 0 0 0 1 0 1
131 Tobacco 0 1 0 0 0 1
136 Batteries: Thermoelectric and Photoelectric 0 0 1 0 0 1
150 Purses, Wallets, and Protective Covers 0 0 1 0 0 1
152 Resilient Tires and Wheels 0 0 0 0 1 1
185 Motors: Spring, Weight, or Animal Powered 0 0 0 0 1 1
186 Merchandising 0 0 0 0 1 1
187 Elevator, Industrial Lift Truck, or Stationary Lift for Vehicle 1 0 0 0 0 1
190 Trunks and Hand-Carried Luggage 0 0 0 0 1 1
191 Electricity: Transmission To Vehicles 1 0 0 0 0 1
194 Check-Actuated Control Mechanisms 0 0 0 1 0 1
226 Advancing Material of Indeterminate Length 0 1 0 0 0 1
234 Selective Cutting (e.g., Punching) 0 0 0 0 1 1
237 Heating Systems 0 0 0 0 1 1
246 Railway Switches and Signals 0 0 0 1 0 1
299 Mining or In Situ Disintegration of Hard Material 0 0 0 0 1 1
332 Modulators 0 0 0 1 0 1
352 Optics: Motion Pictures 1 0 0 0 0 1
411 Expanded, Threaded, Driven, Headed, Tool-Deformed, or Locked-Threaded Fastener 0 0 0 1 0 1
419 Powder Metallurgy Processes 0 0 0 1 0 1
449 Bee Culture (propagating, raising, caring for bees) 1 0 0 0 0 1
460 Crop Threshing or Separating 1 0 0 0 0 1
464 Rotary Shafts, Gudgeons, Housings, and Flexible Couplings for Rotary Shafts 0 0 1 0 0 1
492 Roll or Roller 0 0 0 0 1 1
494 Imperforate Bowl: Centrifugal Separators 1 0 0 0 0 1
ALL ALL CLASSES 2957 2554 2535 2625 3597 14268


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P.O Box 1450
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fax: (571) 273-0110
email: oeip@uspto.gov

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