| All Patents in class 451/506 |
Patents 1 -
10
of 10
      |
| Number | Date | Patentee | Title | Type |
| 2,221,173 | Nov. 12, 1940 | R.S. Gutsell | Sanding or polishing wheel | grinding wheels |
| 2,377,880 | Jun. 12, 1945 | R.S. Gutsell | Centrifugal abrasive-sheet holding wheel | grinding wheels |
| 2,410,536 | Nov. 05, 1946 | A. Vonnegut | Expansible wheel | sanding machines |
| 2,415,308 | Feb. 04, 1947 | J.O. Schulte | Centrifugally expansible abrasive wheel | sanding machines |
| 2,432,731 | Dec. 16, 1947 | O.S. De Haven | Expanding head for abrasives | sanding machines |
| 2,505,680 | Apr. 25, 1950 | A.W. Mall | Pneumatic sanding wheel | |
| 2,627,705 | Feb. 10, 1953 | G.W. Bruner | Sander head | sanding machines |
| 2,801,504 | Aug. 06, 1957 | J.R. MacIntosh, S.A. Mercurio | Abrasive wheel structure | grinding wheels |
| 2,874,519 | Feb. 24, 1959 | J.R. MacIntosh, S.A. Mercurio | Expansible abrasive wheel | grinding wheels |
| 2,963,833 | Dec. 13, 1960 | J.R. MacIntosh, S.A. Mercurio | Expansible wheel and hub structure | grinding wheels |
