Carbide insert bit
US D210975 S
Description (OCR text may contain errors)
United States Patent 0 H 210.975
Patented May 7, 1968 CARBIDE INSERT BIT Robert R. Blau, Scranton, Pa., assignor to Acker Drill Company, Inc., Scranton, Pa., a corporation of Pennsylvania Filed July 28, 1967, Ser. No. 8,049
Term of patent 14 years (Cl. D54-4) FIG. 1 is a perspective view of a carbide insert bit References Cited showing my new design; P T
FIG. 2 is a side elevational view thereof; and UNITED STATES ATEN S FIG 3 is a top View thereofi 2,856,157 10/1958 Chapin et a1. The phantom line showing of a drill bit shank is for 2,969,122 1/ 1961 Staff X Purpm WALLACE R. BURKE, Primary Examiner.
The ornamental design for a carbide insert bit, as ALAN P. DOUGLAS, Assistant Examiner. shown and described.