| All Patents in class 451/440 |
Patents 1 -
13
of 13
      |
| Number | Date | Patentee | Title | Type |
| 39,465 | Aug. 11, 1863 | D. Cheney, S.S. Cheney | Lathe for Turning Locomotive Crank Pins | metal lathes |
| 1,259,130 | Mar. 12, 1918 | E. Ritz, Jr. | Internal and External Grinder | |
| 1,391,039 | Sep. 20, 1921 | C.H. Beach | Electric Grinder | |
| 1,395,880 | Nov. 01, 1921 | D.W. Ward | Commutator Brush Reseating Tool | brush reseating tools |
| 1,445,857 | Feb. 20, 1923 | W.N. Stevens | Cylinder Grinding Machine | cylindrical grinders |
| 1,527,098 | Feb. 17, 1925 | A. White | Grinding-machine bearing | |
| 1,538,317 | May 19, 1925 | F.T. Flinchbaugh | Portable Reboring Machine for Engine Cylinders | portable metal drilling machines |
| 1,577,478 | Mar. 23, 1926 | L.C. Marburg | Cylinder-grinding attachment | cylindrical grinders |
| 1,733,578 | Oct. 29, 1929 | F.E. Burke | Brake drum truing tool | handheld power tools |
| 1,957,485 | May 08, 1934 | H.W. Zimmerman | Cylinder grinding tool adjusting mechanism | automotive tools |
| 2,203,943 | Jun. 11, 1940 | F.M. Davis | Machine tool spindle mounting | milling machines |
| 2,875,629 | Mar. 03, 1959 | J.E. Poorman | Adjustable Off-Center Drill Holder | drill press chucks |
| 3,022,608 | Feb. 27, 1962 | C. Tree | Taper Grinding Tool | milling machine tools |
