Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5537023 | Charging method for storage batteries | Dieter Hanselmann, Bernd Mayer, Stepfan-Peter Weller | 1996-07-16 |
| 5352967 | Method and apparatus for charging storage batteries to full capacity | Dieter Hanselmann | 1994-10-04 |
| 5331270 | Circuit array for limiting a load current by reverse phase angle control | Berthold Gruber | 1994-07-19 |
| 4962439 | Squaring circuit | — | 1990-10-09 |
| 4737671 | Circuit for detecting the current flow of a triac | Willy Frank | 1988-04-12 |
| 4435651 | Zero voltage switch | — | 1984-03-06 |
| 4288740 | Constant current switch | Helmut Moser | 1981-09-08 |
| 4258277 | Discriminator circuits | — | 1981-03-24 |
| 4184087 | Window discriminator or voltage range sensor | — | 1980-01-15 |