| All Patents in class 451/160 |
Patents 16 -
30
of 33
      |
| Number | Date | Patentee | Title | Type |
| 1,281,001 | Oct. 08, 1918 | C.R. Hazel | Grinding and Polishing Machine | polishing and buffing machinery |
| 1,541,370 | Jun. 09, 1925 | L.T. Medholdt | Setting, grinding, and balancing machine | sharpening machines |
| 1,679,413 | Aug. 07, 1928 | H.R. Isler, L.F. Nenninger, S. Einstein | Cutter Grinder | tool grinders |
| 1,895,122 | Jan. 24, 1933 | F.K. Benedict | Traveling wheel grinder | grinders |
| 1,917,504 | Jul. 11, 1933 | F.W. Curtis | Cutter Grinder | sharpening machines |
| 2,069,097 | Jan. 26, 1937 | P.H. Root | Knife grinder | sharpening machines |
| 2,113,287 | Apr. 05, 1938 | W.G. Baldenhofer | Machine for Grinding and Sharpening Broaches | broach sharpening machines |
| 2,118,967 | May 31, 1938 | F.W. Curtis | Cutter grinder | tool grinders |
| 2,164,212 | Jun. 27, 1939 | R.K. Blond | Attachment for cutter grinders | tool grinders |
| 2,180,911 | Nov. 21, 1939 | B.S. Rogers | Universal lawn mower grinder | sharpening machines |
| 2,208,879 | Jul. 23, 1940 | J.Y. Blazek, V.R. Roy | Grinder for clutch pressure-plates | clutch maintenance |
| 2,483,535 | Oct. 04, 1949 | K.F. Gallimore | Reciprocatory Drive for Machine Tools | metalworking power transmission |
| 2,561,936 | Jul. 24, 1951 | E.L. McFerren | Way Grinding Machine | surface grinders |
| 2,621,686 | Dec. 16, 1952 | J.E. Tompkins | Machine tool with motor-driven rotary and axially fed tools | radial arm saws |
| 2,738,625 | Mar. 20, 1956 | J.J. Strnad | Grinding machine | gasket surface maintenance |
