| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Canada | 24 | |
| #2 | United States | 21 |
| # | Industry | |
|---|---|---|
| #1 | Machines | |
| #2 | Civil engineering | |
| #3 | Electrical machinery and energy | |
| #4 | Machine tools | |
| #5 | Transport |
| # | Name | Total Patents |
|---|---|---|
| #1 | Allen Edwin L | 16 |
| #2 | De Vito Angelo R | 10 |
| #3 | Vito Angelo R De | 5 |
| #4 | Schonitzer Rudolph I | 5 |
| #5 | Slattery Robert E | 3 |
| #6 | O'Neal Wilbert O | 2 |
| #7 | Heron Robert S | 2 |
| #8 | Shay Harry J | 2 |
| #9 | Spisz Albert S | 2 |
| #10 | Peters Robbert N | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US3180669A | Door control mechanism | |
| US3027184A | Door control mechanism | |
| US3047325A | Door control mechanisms | |
| US3002394A | Brake actuating mechanism | |
| US3027185A | Door control mechanism | |
| US3008441A | Method of making door support housings | |
| US3000044A | Door check | |
| US2992452A | Door holding devices | |
| US2992451A | Door holding devices | |
| US2985908A | Door holding devices | |
| US2897326A | Electric switch | |
| US3000204A | Door control mechanism | |
| US3008174A | Door support means | |
| US2943879A | Latch mechanism | |
| US2939166A | Door holding device | |
| US2880029A | Door check | |
| US2931677A | Door control mechanism | |
| US2921332A | Door check | |
| US2915779A | Door holding device | |
| US2915778A | Door holding device |