| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 10 | |
| #2 | Canada | 5 | |
| #3 | Spain | 1 |
| # | Industry | |
|---|---|---|
| #1 | Transport | |
| #2 | Consumer goods | |
| #3 | Electrical machinery and energy | |
| #4 | Machines | |
| #5 | Mechanical elements |
| # | Technology | |
|---|---|---|
| #1 | Smoking accessories | |
| #2 | Aeroplanes | |
| #3 | Ships | |
| #4 | Unspecified technologies | |
| #5 | Marine propulsion | |
| #6 | Electric discharge tubes | |
| #7 | Gearing |
| # | Name | Total Patents |
|---|---|---|
| #1 | Kirsten Kurt F J | 15 |
| #2 | Heuver Herbert M | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US2679848A | Butt-ejecting cigarette holder | |
| US2532235A | Cycloidal propeller control mechanism | |
| US2418555A | Multiplex bevel gearing | |
| US2396428A | Hull construction | |
| US2324216A | Tobacco pipe | |
| US2200237A | Tobacco pipe | |
| US2200236A | Tobacco pipe | |
| US2233741A | Cathode electrode | |
| US2090052A | Aircraft | |
| US2045233A | Propeller for aircraft | |
| CA458505A | Multiplex bevel gearing | |
| CA394381A | Tobacco pipe | |
| CA386779A | Directly heated cathode | |
| CA255597A | Clutch | |
| CA262333A | Marine vessel |