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