Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4277657 | Apparatus for determining the quantity of particles present in a container | Willi Kleinschmidt | 1981-07-07 |
| 4261289 | Magnetic brush device for developing electrostatic charge images | — | 1981-04-14 |