| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 11 | |
| #2 | Canada | 1 |
| # | Industry | |
|---|---|---|
| #1 | Civil engineering | |
| #2 | Machines | |
| #3 | Transport |
| # | Technology | |
|---|---|---|
| #1 | General building constructions | |
| #2 | Shaping clay | |
| #3 | Vehicle suspension arrangements |
| # | Name | Total Patents |
|---|---|---|
| #1 | Hahn Frank R | 12 |
| Publication | Filing date | Title |
|---|---|---|
| US2164322A | Building construction and building element | |
| US1952128A | Spring and stabilizer | |
| US1580485A | Mold | |
| US1538549A | Building unit and tie for same | |
| US1520344A | Building construction | |
| US1577906A | Building construction | |
| US1436033A | Mold | |
| US1519305A | Building construction | |
| US1514081A | Concrete building construction | |
| US1213188A | Building construction. | |
| US1165668A | Building construction. | |
| CA245869A | Building construction |