| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 43 |
| # | Industry | |
|---|---|---|
| #1 | Transport | |
| #2 | Machines | |
| #3 | Packaging and shipping | |
| #4 | Civil engineering | |
| #5 | Electrical machinery and energy |
| # | Technology | |
|---|---|---|
| #1 | Railway bodies | |
| #2 | Rail vehicle suspensions | |
| #3 | Couplings | |
| #4 | Railway brakes | |
| #5 | Cranes | |
| #6 | Unspecified technologies | |
| #7 | Machines for making railways | |
| #8 | Locks | |
| #9 | Electrically-conductive connections | |
| #10 | Unspecified technologies |
| # | Name | Total Patents |
|---|---|---|
| #1 | Gregg Louis D | 15 |
| #2 | Burr Gregg William | 6 |
| #3 | Gregg Otis Tiffany | 6 |
| #4 | Gregg Louis Damarin | 5 |
| #5 | Gregg William C | 4 |
| #6 | Gregg Otis T | 3 |
| #7 | Tiffany Gregg Otis | 2 |
| #8 | Angell Thomas U | 1 |
| #9 | Dahl John L | 1 |
| #10 | Dravo Hudson D | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US2546029A | Side bearing for car trucks | |
| US2138130A | Car structure | |
| US2011628A | Car roof | |
| US2021957A | Combination latch and lever for car doors | |
| US1967820A | Coupling pin and attachment therefor | |
| US1964777A | Cane car and the like | |
| US1763698A | Cane car and the like | |
| US1691473A | Stake pocket | |
| US1725912A | Truck bolster | |
| US1691474A | Car-frame construction | |
| US1730036A | Pedestal brace | |
| US1720324A | Railway journal box | |
| US1730035A | Railway-car-frame reenforcement | |
| US1791670A | Railway brake mechanism | |
| US1695281A | Car coupler | |
| US1698948A | Railway-car underframe | |
| US1634779A | Cane car and the like | |
| US1610771A | Cane car and the like | |
| US1634778A | Vehicle for the transportation of sugar cane and the like | |
| US1610772A | Cane car and the like |