| All Patents in class 409/334 |
Patents 16 -
28
of 28
      |
| Number | Date | Patentee | Title | Type |
| 362,054 | May 03, 1887 | T. Baum | Machine for Dressing the Surfaces of Metal Articles | metal slotting machines |
| 388,946 | Sep. 04, 1888 | G. Benson | Machine for Cutting Key Seats | key seating machines |
| 406,525 | Jul. 09, 1889 | A.M. Little, O.C. Little | Key Seat Cutting Machine | key seating machines |
| 411,884 | Oct. 01, 1889 | A.J. Frith, H.L. Binsse | Slotting Machine | metal slotting machines |
| 447,269 | Feb. 24, 1891 | H.F. Wyatt | Mortising Machine | metal slotting machines |
| 518,023 | Apr. 10, 1894 | W.P. Davis | Key Seating Machine | key seating machines |
| 846,728 | Mar. 12, 1907 | W.A. Warman, R.B. Cochrane | Shaping Machine | metal shapers |
| 1,118,342 | Nov. 24, 1914 | B.M. Hanson | Metal-working machine | metal shapers |
| 1,466,062 | Aug. 28, 1923 | L.E. Rhodes | Vertical Shaper Attachment | metal shapers |
| 2,532,591 | Dec. 05, 1950 | J.B. Armitage | Slotting Machine | milling machine accessories |
| 2,551,359 | May 01, 1951 | M. Wahlstrom, R.F. Bannow | Slotting Machine Operating at Universal Angles in Overall Locations | milling machine accessories |
| 2,947,225 | Aug. 02, 1960 | L.J. Heppner | Polygonal Hole Forming Tool | drill bits |
| 3,881,398 | May 06, 1975 | V.J. Gravagne | Reciprocating Tool Attachment for Milling Machine | milling machine accessories |
