Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4726092 | Casement window hinge | Anthony C. Schema | 1988-02-23 |
| 4521993 | Chain operator for a window | Anthony C. Schema | 1985-06-11 |
| 4362328 | Patio door lock | Gary F. Paulson, Jerome W. Natzel | 1982-12-07 |
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4726092 | Casement window hinge | Anthony C. Schema | 1988-02-23 |
| 4521993 | Chain operator for a window | Anthony C. Schema | 1985-06-11 |
| 4362328 | Patio door lock | Gary F. Paulson, Jerome W. Natzel | 1982-12-07 |