| All Patents in class 29/DIG.09 |
Patents 1 -
15
of 15
      |
| Number | Date | Patentee | Title | Type |
| 115,451 | May 30, 1871 | J.N. Durrell | Improvement in machines for tapping nuts | nut or bolt making machines |
| 142,511 | Sep. 02, 1873 | S.W. Putnam, Jr. | Improvement in machines for tapping nuts | nut or bolt making machines |
| 159,723 | Feb. 09, 1875 | C. Van Haagen | Improvement in grinding apparatus | drill grinders |
| 367,331 | Jul. 26, 1887 | W.F. Barnes | Grindstone-frame | grindstone frames |
| 399,344 | Mar. 12, 1889 | J.M. Petersen | Machine for fitting the ends of band-saws | bandsaw accessories |
| 575,737 | Jan. 26, 1897 | A.S. Robinson | Machine for grinding knives of cutter-bars | sharpeners |
| 609,803 | Aug. 30, 1898 | J.F. Gilliland | Box-making machine | box making machines |
| 622,212 | Apr. 04, 1899 | R. Dutton | Twist-drill grinder | drill grinders |
| 1,090,299 | Mar. 17, 1914 | A.M. Harrington, R.F. Scott | Bolt-cutting machine | nut or bolt making machines |
| 1,486,155 | Mar. 11, 1924 | A.M. Morgan | Bung-hole reamer | cooper |
| 1,635,702 | Jul. 12, 1927 | E.P. Bullard, Jr. | Cutting Compound Distribution System | |
| 1,971,790 | Aug. 28, 1934 | A.W. Mall | Portable power tool | |
| 2,209,939 | Jul. 30, 1940 | L.L. Schauer | Automatically controlled gravity oiler | metalworking machine lubrication |
| 2,372,699 | Apr. 03, 1945 | H.V. Boehnke, C.A. Wiken | Cutting machine | circular crosscut saws |
| 2,374,716 | May 01, 1945 | C.A. Wiken | Grinder | cutter grinding |
