| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 19 | |
| #2 | Canada | 1 |
| # | Industry | |
|---|---|---|
| #1 | Machines | |
| #2 | Pharmaceuticals | |
| #3 | Transport | |
| #4 | Basic materials chemistry | |
| #5 | Furniture and games | |
| #6 | Mechanical elements |
| # | Name | Total Patents |
|---|---|---|
| #1 | Campbell William R | 20 |
| #2 | Paulsen Neil E | 4 |
| #3 | Palma Kathleen G | 2 |
| #4 | Johnson Roland H | 2 |
| #5 | Hepler Douglas I | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US2122311A | Roller skate | |
| US1257975A | Capping-off stick. | |
| US1143104A | Apparatus for drawing glass. | |
| US1180565A | Method of drawing glass. | |
| US1122477A | Apparatus for drawing glass cylinders. | |
| US1122476A | Glass-drawing apparatus. | |
| US1122475A | Glass-drawing apparatus. | |
| US1101057A | Glass-drawing pot. | |
| US997113A | Shoe-polishing machine. | |
| US979377A | Shoe-polish bottle. | |
| US891524A | Four-horse evener. | |
| US883449A | Differential-draft appliance. | |
| US876942A | Draft-equalizer. | |
| US841930A | Draft-equalizer. | |
| US766324A | Faucet. | |
| CA9559A | Improvements on water filters |