| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 12 | |
| #2 | Canada | 1 |
| # | Industry | |
|---|---|---|
| #1 | Measurement | |
| #2 | Machines | |
| #3 | Mechanical elements | |
| #4 | Furniture and games |
| # | Technology | |
|---|---|---|
| #1 | Measuring distances | |
| #2 | Shaping of plastics | |
| #3 | Frames | |
| #4 | Unspecified technologies | |
| #5 | Special furniture | |
| #6 | Measuring electric variables |
| # | Name | Total Patents |
|---|---|---|
| #1 | Hull Walter E | 13 |
| Publication | Filing date | Title |
|---|---|---|
| US3234657A | Magnetic compass | |
| US3062695A | Methods of and means for securing together thermoplastic members | |
| US3079698A | Magnetic compass | |
| US2919880A | Object supporting means | |
| US2943398A | Magnetic compass | |
| US2294355A | Magnetic compass | |
| US2167046A | Bracket | |
| US2160102A | Display rack | |
| US2155712A | Magnetic compass | |
| US1994998A | Compensating device for compasses | |
| US1972708A | Magnetic compass | |
| US1656116A | Electrical measuring instrument | |
| CA660845A | Methods of and means for securing together thermoplastic members |