All Patents of Type: metalworking countersinks |
Patents 1 -
14
of 14
|
Number | Date | Patentee | Title | Type |
74,870 | Feb. 25, 1868 | P.A. Whitney | Drill and Countersink | metalworking countersinks |
252,704 | Jan. 24, 1882 | W.H. Southwick | Combined Drill and Countersink | drill bits |
332,308 | Dec. 15, 1885 | G.R. Valentine | Countersink | metalworking countersinks |
341,938 | May 18, 1886 | C.L. Perkins | Cleaning Tool | metalworking countersinks |
370,484 | Sep. 27, 1887 | A. Latham | Counterbore Reamer or Countersink | metalworking counterbores |
1,047,466 | Dec. 17, 1912 | F.A. Wagner | Cutter Securing Means | metalworking countersinks |
2,226,226 | Dec. 24, 1940 | O.C. Hedin | Removable pilot for counterbore or reamer | metalworking countersinks |
2,242,510 | May 20, 1941 | S.A. Cogsdill | Adjustable countersink structure | metalworking countersinks |
2,308,055 | Jan. 12, 1943 | S.A. Cogsdill | Adjustable countersink structure | metalworking countersinks |
2,710,549 | Jun. 14, 1955 | S.A. Cogsdill | Micro-limit Countersink Driver | metalworking countersinks |
2,829,544 | Apr. 08, 1958 | W.C. Bergstrom | Countersinking and counterboring tool | metalworking countersinks |
2,905,030 | Sep. 22, 1959 | S.A. Cogsdill | Micro-Limit Countersink Drive With Override | metalworking countersinks |
3,099,174 | Jul. 30, 1963 | S.A. Cogsdill | Countersinking Tool | metalworking countersinks |
4,032,251 | Jun. 28, 1977 | T.A. Ribich | Countersinking and deburring tool | metalworking countersinks |