| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 12 |
| # | Industry | |
|---|---|---|
| #1 | Engines, pumps and turbines | |
| #2 | Thermal processes | |
| #3 | Mechanical elements | |
| #4 | Transport | |
| #5 | Textiles and paper | |
| #6 | Machines |
| # | Technology | |
|---|---|---|
| #1 | Non-positive-displacement pumps | |
| #2 | Pumps | |
| #3 | Air-conditioning | |
| #4 | Vehicle suspension arrangements | |
| #5 | Springs | |
| #6 | Pistons and sealings | |
| #7 | Spinning | |
| #8 | Shafts | |
| #9 | Refrigerators | |
| #10 | Unspecified technologies |
| # | Name | Total Patents |
|---|---|---|
| #1 | Allen Trask | 12 |
| Publication | Filing date | Title |
|---|---|---|
| US3276677A | Lubrication system for compressor shaft journals | |
| US3226012A | Centrifugal compressor | |
| US2661603A | Vault conditioner with control means | |
| US2509377A | Compressor | |
| US2587408A | Seal | |
| US2509376A | Compressor | |
| US2506751A | Compressor suction valve | |
| US2549547A | Humidity control system | |
| US2486226A | Air conditioning apparatus | |
| US2478343A | Dimming lamp | |
| US2320314A | Differential spring suspension for vehicles | |
| US2176159A | Differential spring suspension for vehicles |