| All Patents in class 451/343 |
Patents 1 -
10
of 13
      |
| Picture | Number | Date | Patentee | Title |
| | 734,417 | Jul. 21, 1903 | J.H. Hubbell | Balancing device for revolving bodies |
 | 1,091,851 | Mar. 31, 1914 | A.B. Landis | Automatic balancing mechanism |
| | 1,277,472 | Sep. 03, 1918 | W.B. Peirce | Grinding Machine |
| | 2,125,442 | Aug. 02, 1938 | F.P. Healy | Valve regrinding device |
| | 2,142,021 | Dec. 27, 1938 | A.H. Dall, H. Ernst | Automatic Dynamic Balancer for Machine Tools |
| | 2,164,900 | Jul. 04, 1939 | J.C. Campbell | Dynamic Balancer for Machine Tools |
| | 2,216,308 | Oct. 01, 1940 | E.C. Ballman | Method and Means for Balancing Grinding Wheels |
| | 2,241,637 | May 13, 1941 | H. Ernst, A.H. Dall | Dynamic Balancing Mechanism for Machine Tools |
| | 2,243,379 | May 27, 1941 | G.H. Johnson | Machine Tool |
| | 2,507,558 | May 16, 1950 | W. Schroeder, A.H. Dall | Dynamic Balancing Mechanism |
