| All Patents in class 409/177 |
Patents 1 -
9
of 9
      |
| Picture | Number | Date | Patentee | Title |
| | 280,582 | Jul. 03, 1883 | L. Cosgrove | Machine for Cutting Key Seats |
| | 361,677 | Apr. 26, 1887 | C.H. Dodd | Machine for Grooving Shafts, Axle Journals, &c. |
 | 543,309 | Jul. 23, 1895 | L. Lake, D. Lake | Machine for cutting key-seats |
 | 549,573 | Nov. 12, 1895 | W.J. Letzkus | Keyway Cutter |
 | 795,420 | Jul. 25, 1905 | W.L. Schellenbach | Key-seating tool |
| | 1,532,650 | Apr. 07, 1925 | H.W. Brewer | Portable Milling Machine |
| | 1,743,125 | Jan. 14, 1930 | G.W. Fleming | Portable device for regrooving solid tires |
| | 3,466,972 | Sep. 16, 1969 | P.M. Strait | Portable Milling Machine |
| | 4,778,316 | Oct. 18, 1988 | D.S. Strait | Portable Keymill |
