| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 9 | |
| #2 | Canada | 5 |
| # | Industry | |
|---|---|---|
| #1 | Transport | |
| #2 | Machines | |
| #3 | Civil engineering | |
| #4 | Machine tools |
| # | Technology | |
|---|---|---|
| #1 | Railway bodies | |
| #2 | Unspecified technologies | |
| #3 | Doors and windows | |
| #4 | Punching metal | |
| #5 | Unspecified technologies | |
| #6 | Railway brakes |
| # | Name | Total Patents |
|---|---|---|
| #1 | Barrows Allan S | 14 |
| Publication | Filing date | Title |
|---|---|---|
| US1960935A | Hand brake | |
| US1636891A | Metallic car door | |
| US1624306A | Car door | |
| US1513363A | Sheet-metal door | |
| US1421146A | Fire door or shutter | |
| US1560526A | Metal door | |
| US1342400A | Sheet-metal door | |
| US1341967A | Process of making edge-corrugated sheet-metal articles | |
| CA186947A | Metal car door | |
| US1395080A | Sheet-metal flush car-door | |
| CA213115A | Sheet metal door | |
| CA256242A | Metal door | |
| CA241149A | Fire door | |
| CA270606A | Door |