| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Canada | 6 | |
| #2 | Switzerland | 5 | |
| #3 | Austria | 3 | |
| #4 | United States | 3 | |
| #5 | United Kingdom | 1 |
| # | Industry | |
|---|---|---|
| #1 | Transport | |
| #2 | Audio-visual technology | |
| #3 | Mechanical elements |
| # | Technology | |
|---|---|---|
| #1 | Aeroplanes | |
| #2 | Loudspeakers and microphones | |
| #3 | Gas holders |
| # | Name | Total Patents |
|---|---|---|
| #1 | Hartmann Carl | 18 |
| #2 | Vaudt Wilhelm | 2 |
| #3 | Wirth Wilhelm | 1 |
| #4 | Hartmann Bernhardt | 1 |
| Publication | Filing date | Title |
|---|---|---|
| CA183498A | Explosive | |
| CA166160A | Hexanitrosulphobenzide manufacture | |
| CA183496A | Explosive for projectiles, etc. | |
| US1104114A | Flying-machine. | |
| US1005205A | Aeroplane. | |
| US907794A | Resonator for phonographic reproducers. | |
| GB189627948A | Improvements in Bodices and Bodice-corsets. | |
| CA273268A | Water heater | |
| CA265430A | Valve | |
| CA265801A | Gas burner |