Issued Patents All Time
Showing 26–27 of 27 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4311493 | Vacuum cleaner bag assembly | Harold W. Schaefer, Joyce Thomas | 1982-01-19 |
| 4240812 | Vacuum cleaner bag assembly | Harold W. Schaefer, Joyce Thomas | 1980-12-23 |
Showing 26–27 of 27 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4311493 | Vacuum cleaner bag assembly | Harold W. Schaefer, Joyce Thomas | 1982-01-19 |
| 4240812 | Vacuum cleaner bag assembly | Harold W. Schaefer, Joyce Thomas | 1980-12-23 |