| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 11 |
| # | Industry | |
|---|---|---|
| #1 | Transport | |
| #2 | Packaging and shipping | |
| #3 | Civil engineering |
| # | Technology | |
|---|---|---|
| #1 | Railway bodies | |
| #2 | Transport or storage devices | |
| #3 | Machines for making railways | |
| #4 | Elevators and escalators | |
| #5 | Mining | |
| #6 | Railway equipment | |
| #7 | Couplings |
| # | Name | Total Patents |
|---|---|---|
| #1 | Long Armistead R | 11 |
| #2 | Long John B | 4 |
| Publication | Filing date | Title |
|---|---|---|
| US2536950A | Pan for chain conveyers | |
| US2420085A | Conveyor | |
| US2327913A | Mine hoistway cage | |
| US2297570A | Bit holder for cutter chains | |
| US2308374A | Combined mine car end, buffer, and draft construction | |
| US1834464A | Turn-out switch | |
| US1834463A | Mine car | |
| US1831676A | Car stop | |
| US1784367A | Temporary extension for mine railways | |
| US1993675A | Combined car bumper and light guard | |
| US1922310A | Mine car |