United States Patent 3267623
Publication Date:
08/23/1966
Assignee:
MERIT PRODUCTS INC
Other Classes:
428/40.100, 428/64.100, 206/820, 206/445, 433/142
International Classes:
B24D11/00
US Patent References:
| 2843469 | Methods of making non-rigid rotative abrasive structures | | | |
| 2888785 | Eraser cleaner | | | |
| 3016294 | Abrasive product | | | |