Issued Patents All Time
Showing 1–12 of 12 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4545120 | Shaving apparatus | — | 1985-10-08 |
| 4510687 | Shaving apparatus | Gerrit J. Groothuis, Atze de Haan, Hendrik Poel, Eduard W. Tietjens | 1985-04-16 |
| 4343086 | Shaving apparatus | Ferdinand M. Trees | 1982-08-10 |
| 4283849 | Cutting unit for a dry-shaving apparatus | Manfred Engelhardt, Jan Reinink, Eduard W. Tietjens | 1981-08-18 |
| 4275497 | Shaving apparatus | Manfred Engelhardt, Jan Reinink, Ferdinand M. Trees, Eduard W. Tietjens, Gerrit J. Groothuis | 1981-06-30 |
| 4262416 | Shaving apparatus | Dirk J. Van Hemmen, Jan Reinink | 1981-04-21 |
| 4259781 | Shaving apparatus | Ebbe Boiten, Gerrit J. Groothuis | 1981-04-07 |
| 4258470 | Shaving apparatus | Ebbe Boiten | 1981-03-31 |
| D257744 | Shaving cutter | Dirk J. Van Hemmen | 1980-12-30 |
| 4240199 | Shaving apparatus | Ebbe Boiten, Eduard W. Tietjens | 1980-12-23 |
| 4223437 | Shaving apparatus | Ebbe Boiten | 1980-09-23 |
| 4222168 | Shaving apparatus | Ebbe Boiten, Eduard W. Tietjens, Tjamme De Vries | 1980-09-16 |