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All Patents in class 451/520 | |||||
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Picture | Number | Date | Patentee | Title | |
337,515 | Mar. 09, 1886 | S.I. Phelps | Molding-polisher | ||
![]() | 346,680 | Aug. 03, 1886 | J.L. Perry | Sand-paper cylinder | |
![]() | 399,629 | Mar. 12, 1889 | J.L. Perry | Polishing-cylinder | |
![]() | 1,988,361 | Jan. 15, 1935 | A.L. Pearson | Sanding wheel | |
![]() | 2,167,573 | Jul. 25, 1939 | C. Jones | Sanding wheel head |