Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4875308 | Adjustable insulating glass window | Dieter Peetz, Hans-Peter Siemonsen, Ralf Reinicke, Lothar Witting, Aloisius Schafhausen | 1989-10-24 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4875308 | Adjustable insulating glass window | Dieter Peetz, Hans-Peter Siemonsen, Ralf Reinicke, Lothar Witting, Aloisius Schafhausen | 1989-10-24 |