| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 11 | |
| #2 | Canada | 2 |
| # | Industry | |
|---|---|---|
| #1 | Mechanical elements | |
| #2 | Machines | |
| #3 | Machine tools | |
| #4 | Transport |
| # | Technology | |
|---|---|---|
| #1 | Pipes | |
| #2 | Unspecified technologies | |
| #3 | Tools for connecting or disengaging | |
| #4 | Parachutes |
| # | Name | Total Patents |
|---|---|---|
| #1 | Julius Berger | 5 |
| #2 | Main Donald W | 5 |
| #3 | Rudolf Kaiser | 5 |
| #4 | Cox Robert G | 3 |
| #5 | Peter Hirsch | 2 |
| #6 | Willy Zurmuhlen | 2 |
| #7 | Rudolf Hundt | 1 |
| #8 | Eduard Tatschke | 1 |
| #9 | Peter Hirsch Friedrich | 1 |
| #10 | Hermann Klaue | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US2371971A | Hose connector | |
| US2391022A | Self-sealing coupling | |
| US2400686A | Nipple inserting tool | |
| US2311239A | Self-sealing coupling | |
| US2300483A | Pipe union | |
| US2255593A | Tube coupling | |
| US2219266A | Hose and pipe coupling | |
| US2375614A | Hose conduit | |
| US2266211A | Hose connection | |
| US2226702A | Tool for fixing hose unions | |
| US2219218A | Pipe and hose union | |
| CA433426A | Hose connector | |
| CA437232A | Self-sealing coupling |