All Patents in class 451/200 |
Patents 1 -
9
of 9
|
Number | Date | Patentee | Title | Type |
8,929 | May 04, 1852 | W. Southwell | Machinery for grinding or polishing saw-blades, &c. | tool making |
390,931 | Oct. 09, 1888 | B.D. Whitney | Sharpening-machine | industrial machine gearing |
407,721 | Jul. 23, 1889 | J.D. Cox, Jr. | Machine for back-clearing twist-drills | tool making machines |
562,268 | Jun. 16, 1896 | F. Ashton | Apparatus for Grinding Parallel Spindles Rods or Shafts | cylindrical grinders |
2,032,589 | Mar. 03, 1936 | E.A. Overstedt | Gear Lapping Machine | gear lapping machines |
2,232,408 | Feb. 18, 1941 | S.M. Shaw | Gear Finishing Machine | gear making machines |
2,304,580 | Dec. 08, 1942 | J.M. Luers | Grinding Machine | grinding machines |
2,561,004 | Jul. 17, 1951 | W.G. Baldenhofer, J.C. Wilson | Method and Apparatus for Grinding | surface grinders |
2,578,531 | Dec. 11, 1951 | C.H. Drury, E.V. Flanders | Machine for Grinding Impeller Bucket Shanks | profile and contour grinders |