Issued Patents 1982
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4347739 | Measuring equipment for the determination of terrestrial refraction | Horst Stegmann, Peter Hentschel | 1982-09-07 |
| 4321683 | Measuring system for alignment and measurement with an electronic tachymeter | Hermann Göring, Peter Hentschel | 1982-03-23 |