| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 19 | |
| #2 | Canada | 3 |
| # | Industry | |
|---|---|---|
| #1 | Transport | |
| #2 | Mechanical elements |
| # | Technology | |
|---|---|---|
| #1 | Vehicle parts | |
| #2 | Venting or aerating devices |
| # | Name | Total Patents |
|---|---|---|
| #1 | Grotenhuis William J | 14 |
| #2 | Pancoast William G | 6 |
| #3 | Ericson Willard E | 2 |
| #4 | Thompson George W | 1 |
| #5 | Evely Harry C | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US1754964A | Clamp for automobile bumpers | |
| US1660961A | Automobile bumper construction | |
| US1621081A | Automobile bumper | |
| US1565273A | Automobile bumper | |
| US1571249A | Automobile bumper | |
| US1565272A | Automobile bumper | |
| US1527184A | Bracket for vehicle rear bumpers | |
| US1497902A | Automobile bumper | |
| US1524275A | Clamping device | |
| US1458927A | Bumper-attaching bracket | |
| US1531022A | Automobile bumper | |
| US1559607A | Automobile bumper | |
| US1424400A | Bumper bracket | |
| US1431838A | Automobile bumper-attaching hanger | |
| US1413220A | Automobile bumper | |
| US1413221A | Automobile bumper | |
| US1364261A | Bumper-attachment bracket | |
| US1629554A | Controlling means for ignition cut-offs | |
| US1344649A | Bumper attachment | |
| CA265167A | Automobile bumper |