| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 16 | |
| #2 | Canada | 2 |
| # | Industry | |
|---|---|---|
| #1 | Machine tools | |
| #2 | Machines | |
| #3 | Transport | |
| #4 | Electrical machinery and energy | |
| #5 | Packaging and shipping | |
| #6 | Furniture and games |
| # | Technology | |
|---|---|---|
| #1 | Unspecified technologies | |
| #2 | Grinding or polishing devices | |
| #3 | Vehicle parts | |
| #4 | Unspecified technologies | |
| #5 | Presses | |
| #6 | Punching metal | |
| #7 | Non-portable lighting devices | |
| #8 | Domestic washing | |
| #9 | Making metal sheets | |
| #10 | Cranes |
| # | Name | Total Patents |
|---|---|---|
| #1 | Campbell John A | 18 |
| #2 | Sprumont Constant M | 2 |
| Publication | Filing date | Title |
|---|---|---|
| US2676640A | Apparatus for reshaping annealing inner covers | |
| US2331374A | Conveying apparatus | |
| US2245899A | Guard arm for protection of passengers in motor vehicles | |
| US1688409A | Street signal for vehicular traffic | |
| US1590671A | Floor-surfacing machine | |
| US1523049A | Surfacing machine | |
| US1503298A | Hatrack for automobiles | |
| US1486011A | Headlight indicator | |
| US1460407A | Surfacing machine | |
| US1445001A | Valve-releasing device | |
| US1279082A | Dressing-machine for floors, &c. | |
| US1275126A | Automobile-lock. | |
| US1149025A | Press. | |
| US1020884A | Water-carrier. | |
| US991947A | Miter-box. | |
| US841621A | Bag-holder. | |
| CA513365A | Apparatus for reshaping inner covers of box annealing furnaces | |
| CA437528A | Safety arm rest |