| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 11 | |
| #2 | Canada | 1 |
| # | Industry | |
|---|---|---|
| #1 | Machines | |
| #2 | Civil engineering | |
| #3 | Packaging and shipping | |
| #4 | Electrical machinery and energy | |
| #5 | Optics | |
| #6 | Machine tools | |
| #7 | Engines, pumps and turbines | |
| #8 | Transport | |
| #9 | Furniture and games |
| # | Technology | |
|---|---|---|
| #1 | Unspecified technologies | |
| #2 | Sewers | |
| #3 | Labelling machines | |
| #4 | Sawing | |
| #5 | Cameras | |
| #6 | Domestic washing | |
| #7 | Installations for use in connection with aircrafts | |
| #8 | Electric switches | |
| #9 | Cooling of machines | |
| #10 | Structural elements |
| # | Name | Total Patents |
|---|---|---|
| #1 | Powell Paul R | 12 |
| #2 | Roper John | 1 |
| #3 | Badeker Huber W | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US3420217A | Safety device for internal combustion engine | |
| US2991619A | Hydraulic variable speed transmission | |
| US2845677A | Holdback and release unit | |
| US2770314A | Floor drain | |
| US2770315A | Drain with valved trap | |
| US2403119A | Machine tool | |
| US2284019A | Labeling apparatus | |
| US2212649A | Dishwashing machine | |
| US2089422A | Labeling machine | |
| US1523711A | Builder's hardware | |
| US1202221A | Folding camera. | |
| CA647774A | Hydraulic variable speed transmission |