| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 14 | |
| #2 | Canada | 1 |
| # | Industry | |
|---|---|---|
| #1 | Civil engineering | |
| #2 | Packaging and shipping | |
| #3 | Machines | |
| #4 | Mechanical elements | |
| #5 | Transport |
| # | Name | Total Patents |
|---|---|---|
| #1 | Prescott Arthur T | 10 |
| #2 | Tomkinson Charles C | 3 |
| #3 | Prescott Arthur Thompson | 1 |
| #4 | Goss Harry T | 1 |
| #5 | Marshall Ernest W | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US1258638A | Movable door-column. | |
| US1276996A | Door-control mechanism. | |
| US1431181A | Door and hoisting mechanism therefor | |
| US1273923A | Door and operating mechanism therefor. | |
| US1274443A | Door. | |
| US1264501A | Multisection door. | |
| US1191929A | Two-lift door. | |
| US1213945A | Turnover door. | |
| US1183402A | Variable-counterweighted door. | |
| US1209360A | Door. | |
| US1127661A | Power-ramp. | |
| US1094015A | Combination door and wharf-drop mechanism. | |
| US1107702A | Ferry-landing apparatus. | |
| US1158555A | Clutch for power-winches. | |
| CA126854A | Counterbalancing mechanism |