| All Patents in class 451/24 |
Patents 1 -
15
of 33
      |
| Number | Date | Patentee | Title | Type |
| 148,161 | Mar. 03, 1874 | G. Ames | Improvement in machines for removing bark from logs of wood | debarking machines |
| 1,182,879 | May 09, 1916 | S.H. Whitten | Pulp-grinding machines | wood grinding machines |
| 1,840,231 | Jan. 05, 1932 | F.S. Haas, R.E. Harrison | Grinding Machine | grinding machines |
| 1,942,414 | Jan. 09, 1934 | L.A. Dumser, P.S. Jackson | Actuating means for machine tools | |
| 1,949,511 | Mar. 06, 1934 | C.G. Flygare | Grinding machine table operating mechanism | grinders |
| 1,949,516 | Mar. 06, 1934 | C.H. Norton | Hydraulic wheel feeding mechanism | grinders |
| 1,961,089 | May 29, 1934 | A. Schinkez, E.R. Smith | Speed Coordinating Mechanism for Machine Tools | metalworking machine mechanisms |
| 1,969,063 | Aug. 07, 1934 | H.R. Isler, H. Ernst | Grinding Machine | grinding machines |
| 1,978,181 | Oct. 23, 1934 | J.R. Whittles | Hydraulically driven surface grinding machine | surface grinders |
| 2,000,553 | May 07, 1935 | C.R. Alden | Machine tool | horizontal boring mills |
| 2,101,383 | Dec. 07, 1937 | H.H. Asbridge | Precision grinding machine | |
| 2,142,022 | Dec. 27, 1938 | R.D. Wortendyke, H. Ernst | Infeed Cycle Control Attachment | grinding machines |
| 2,147,891 | Feb. 21, 1939 | C.L. Schulte, A.J. Graf | Tomatic Infeed Centerless Grinder | grinding machines |
| 2,241,634 | May 13, 1941 | J. Decker | Automatic Infeed Mechanism for Grinding Machines | grinding machines |
| 2,294,265 | Aug. 25, 1942 | A.J. Graf, R.D. Wortendyke | Automatic Infeeding Mechanism for Grinding Machines | grinding machines |
