All Patents of Type: drill accessories |
Patents 1 -
15
of 107
|
Number | Date | Patentee | Title | Type |
19,829 | Apr. 06, 1858 | J. Quigley, N. Clare | Reamer/Plug Cutter Attachment | drill accessories |
21,961 | Nov. 02, 1858 | W.O. Hickok | Die for Cutting Wooden Screws | drill accessories |
51,248 | Nov. 28, 1865 | W.C. Wells | Drill Gage | measurement gauges |
54,825 | May 15, 1866 | G.W. Wait | Improvement in Tools for Making Spiles | drill accessories |
55,132 | May 29, 1866 | S.L. Lyford | Improvement in Gages for Augers | drill depth stops |
62,754 | Mar. 12, 1867 | T.C. Keith | Auger Chip Clearing Accessory | drill accessories |
62,849 | Mar. 12, 1867 | T. Hofstatter | Improvement in Augers | countersinks |
74,466 | Feb. 11, 1868 | W.E. Whiting | Improvement in Gauges for Augers | drill depth stops |
76,123 | Mar. 31, 1868 | W.C. Wells | Drill Gage | drill accessories |
80,915 | Aug. 11, 1868 | L. Colt | Auger | drill depth stops |
92,927 | Jul. 27, 1869 | A. Amory | Improvement in guide-attachments for boring-instruments | drill accessories |
95,964 | Oct. 19, 1869 | J.S. Zerbee | Improvement in Combination Tools | countersinks |
115,587 | Jun. 06, 1871 | R.H. Dorn | Improvement in circular cutters | drill accessories |
116,901 | Jul. 11, 1871 | A. Wheeler | Improvement in Gauges for Countersinks | drill depth stops |
117,594 | Aug. 01, 1871 | C.W. Beals | Improvement in Devices for Resetting Old Auger-Bits | drill accessories |