Title:
Retractive pilot for circle cutters
United States Patent 2505236


Inventors:
Dooley, John F.
Application Number:
US70136146A
Publication Date:
04/25/1950
Filing Date:
10/04/1946
Assignee:
Dooley, John F.
Primary Class:
Other Classes:
30/310, 30/DIG.6, 33/27.03, 82/128, 144/24, 408/112, 408/147
International Classes:
B23B51/05
View Patent Images:
US Patent References:
2406442Fly cutter1946-08-27
2360942Drill guide1944-10-24
2359091Test core drill1944-09-26
2263637Geometrical instrument1941-11-25
2223485Countersink1940-12-03
1354848Radius-cutter for metals1920-10-05
0094870N/A1869-09-14
0067194N/A1867-07-30