Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6055871 | Machine for cutting a cylindrical specimen of rocket propellant | Robert L. Gerber, Norman G. Zweirzchowski, Herbert P. Richter | 2000-05-02 |
| 6023983 | Machine for excising a specimen of rocket propellant | Robert L. Gerber, Norman G. Zweirzchowski, Herbert P. Richter | 2000-02-15 |