Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4733811 | Machine for attaching buttons, rivets, or similar to garments | Herbert Birkhofer | 1988-03-29 |
| 4273280 | Machine for the attachment of rivets, buttons or the like on clothing pieces | Herbert Birkhofer, Günther W. Diekhöner | 1981-06-16 |