| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 12 | |
| #2 | Canada | 3 |
| # | Industry | |
|---|---|---|
| #1 | Civil engineering | |
| #2 | Machines | |
| #3 | Transport |
| # | Technology | |
|---|---|---|
| #1 | Indexing scheme relating to hinges | |
| #2 | Hinges for doors or windows | |
| #3 | Unspecified technologies | |
| #4 | Doors and windows | |
| #5 | Wing fittings | |
| #6 | Unspecified technologies | |
| #7 | Railway bodies |
| # | Name | Total Patents |
|---|---|---|
| #1 | Greegor Ralph H | 4 |
| #2 | Brunst William M | 4 |
| #3 | Mccloud Edward H | 3 |
| #4 | Brunst William Max | 2 |
| #5 | Joseph Laufersweiler William | 1 |
| #6 | Greegor Ralph Harold | 1 |
| #7 | Laufersweiler William J | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US2170021A | Truck body and door construction | |
| US2183495A | Flexible rolling curtain | |
| US2095695A | Guide for safety devices on doors | |
| US2095690A | Rolling door structure | |
| US2076878A | Door | |
| US2068543A | Door operating mechanism | |
| US2110231A | Closure-operating device | |
| US2020831A | Overhead door | |
| US2023691A | Airplane hangar door for naval cruisers | |
| US2008000A | Overhead door and operating mechanism | |
| US2007688A | Overhead door | |
| US2041221A | Operating mechanism for overhead doors | |
| CA357183A | Door | |
| CA370392A | Rolling door | |
| CA373224A | Door guide safety device |