| All Patents in class 408/235 |
Patents 46 -
60
of 63
      |
| Number | Date | Patentee | Title | Type |
| 2,278,262 | Mar. 31, 1942 | W.G. Hoelscher | Counterweight Mechanism for Drill Spindles | metalworking machine mechanisms |
| 2,346,198 | Apr. 11, 1944 | H.E. Tautz | Drilling machine | drill presses |
| 2,364,318 | Dec. 05, 1944 | L.L. Schauer | Supplemental counterbalance | drill presses |
| 2,393,907 | Jan. 29, 1946 | C. Herfurth | Milling Machine Vibration Dampener | milling machines |
| 2,439,965 | Apr. 20, 1948 | J.A. Cupier | Drill press | drill presses |
| 2,578,995 | Dec. 18, 1951 | M.H. Emrick | Tapping machine | tapping machines |
| 2,696,763 | Dec. 14, 1954 | G.H. Jones, C.W. Ownley, J. Daugherty | Counterbalancing Mechanism for Machine Tools | metalworking machine mechanisms |
| 2,751,613 | Jun. 26, 1956 | C.O. Lassy | Weight balancing device for tapping spindle | tapping machines |
| 2,896,512 | Jul. 28, 1959 | K.A. Riedel | Machine Tool Counterweight | metalworking machine mechanisms |
| 2,918,720 | Dec. 29, 1959 | R.E. Delamater | Cutting tool support | drilling and boring |
| 2,926,554 | Mar. 01, 1960 | M. Weidig | Hydraulic Spindle Balance | radial drill presses |
| 2,956,482 | Oct. 18, 1960 | P.F. Olton | Automatic Variable Counterbalance | metalworking machine mechanisms |
| 2,983,199 | May 09, 1961 | J. Daugherty | Machine Tool Counter Balance | metalworking machine mechanisms |
| 3,010,713 | Nov. 28, 1961 | B.F. Turkovich | Counterbalance | milling machines |
| 3,018,697 | Jan. 30, 1962 | W. Schroeder, A.H. Dall | Counterbalance control device | milling machines |
