Issued Patents All Time
Showing 26–27 of 27 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4315118 | Electric centrifugal switch | Manfred Kramer, Hans-Dieter Cramer | 1982-02-09 |
| 4283444 | Method of protecting keratinous material from attack by insects that feed on keratin by treatment with 5-phenylcarbamoylbarbituric acid compounds | Bernardo de Sousa, Rene Muntwyler | 1981-08-11 |