| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 7 | |
| #2 | Canada | 3 | |
| #3 | France | 1 |
| # | Industry | |
|---|---|---|
| #1 | Transport | |
| #2 | Machines | |
| #3 | Agriculture | |
| #4 | Mechanical elements | |
| #5 | Furniture and games |
| # | Technology | |
|---|---|---|
| #1 | Vehicle connections | |
| #2 | Dairy products production | |
| #3 | Unspecified technologies | |
| #4 | Clutches and brakes | |
| #5 | Toys | |
| #6 | Explosive charges |
| # | Name | Total Patents |
|---|---|---|
| #1 | Lamberson Nathaniel D | 5 |
| #2 | Smith Ray F | 2 |
| #3 | Deal Josiah J | 1 |
| #4 | Joseph A Derby | 1 |
| #5 | Harms Clarence L | 1 |
| #6 | Doerfer Richard E | 1 |
| #7 | John H Barlow | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US3497240A | Load transferring trailer hitch | |
| US3029787A | Claw assembly for milking machines | |
| US2854256A | Trailer hitch | |
| US2363755A | Ball-and-socket trailer hitch | |
| US2274994A | Power take-off | |
| US636767A | Toy. | |
| CA618135A | Trailer hitch | |
| CA658223A | Claw assembly for milking machines | |
| US689699A | Machine for capping or decapping cartridge. | |
| CA653097A | Trailer hitch |