| All Patents in class 279/2.19 |
Patents 1 -
6
of 6
      |
| Number | Date | Patentee | Title | Type |
| 364,980 | Jun. 14, 1887 | E.P. Walter | Metal Planing Machine | metal planers |
| 531,283 | Dec. 18, 1894 | W.T. Vale, G.A. Ohl | Barrel machine | cooper |
| 1,772,082 | Aug. 05, 1930 | J.H. Hoern | Device for Assembling and Holding Piston Rings for Machining Operations | metalworking machine mechanisms |
| 1,954,034 | Apr. 10, 1934 | E.A. Arp | Equalizing boring guide | automotive tools |
| 2,250,631 | Jul. 29, 1941 | W.R. Meyer, W.F. Groene | Crankshaft Chuck | metal lathe chucks |
| 3,038,280 | Jun. 12, 1962 | W. Dralle | Internal Stock Divider | grinding attachments |
