| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 13 | |
| #2 | Canada | 2 |
| # | Industry | |
|---|---|---|
| #1 | Furniture and games | |
| #2 | Machines | |
| #3 | Consumer goods | |
| #4 | Mechanical elements |
| # | Technology | |
|---|---|---|
| #1 | Office furniture | |
| #2 | Unspecified technologies | |
| #3 | Filing and indexing | |
| #4 | Nails | |
| #5 | Unspecified technologies |
| # | Name | Total Patents |
|---|---|---|
| #1 | Regenhardt Walter F | 15 |
| Publication | Filing date | Title |
|---|---|---|
| US3109432A | Card tray with adjustable follower | |
| US2388572A | Interlocking clip | |
| US2372292A | Filing cabinet | |
| US2344168A | Filing cabinet | |
| US2386343A | Interlock | |
| US2375438A | Interlock | |
| US2304020A | Interlock for steel files | |
| US2256351A | Filing cabinet | |
| US2242263A | Intrlock | |
| US2169769A | Cabinet construction | |
| US2123803A | Cabinet construction | |
| US2139283A | Filing drawer or the like | |
| US1983307A | Sectional filing cabinet | |
| CA439981A | Filing cabinet | |
| CA630722A | One-piece follower for file drawer |