| All Patents in class 451/343 |
Patents 1 -
12
of 12
      |
| Number | Date | Patentee | Title | Type |
| 1,091,851 | Mar. 31, 1914 | A.B. Landis | Automatic balancing mechanism | balancing machinery |
| 1,277,472 | Sep. 03, 1918 | W.B. Peirce | Grinding Machine | |
| 2,125,442 | Aug. 02, 1938 | F.P. Healy | Valve regrinding device | valve and seat maintenance |
| 2,142,021 | Dec. 27, 1938 | A.H. Dall, H. Ernst | Automatic Dynamic Balancer for Machine Tools | grinding machines |
| 2,164,900 | Jul. 04, 1939 | J.C. Campbell | Dynamic Balancer for Machine Tools | grinding machines |
| 2,216,308 | Oct. 01, 1940 | E.C. Ballman | Method and Means for Balancing Grinding Wheels | wheel truing devices |
| 2,241,637 | May 13, 1941 | A.H. Dall, H. Ernst | Dynamic Balancing Mechanism for Machine Tools | grinding machines |
| 2,243,379 | May 27, 1941 | G.H. Johnson | Machine Tool | balancing machinery |
| 2,507,558 | May 16, 1950 | W. Schroeder, A.H. Dall | Dynamic Balancing Mechanism | metalworking machine mechanisms |
| 2,645,886 | Jul. 21, 1953 | D.R. Peterson | Surface Grinder | surface grinders |
| 3,866,489 | Feb. 18, 1975 | R.J. Kimmelaar | Dynamic Balancing Apparatus | centerless grinders |
| 5,027,873 | Jul. 02, 1991 | K.R. Anselm | Balancing of tooling for a wood lathe | wood lathe tools |
