Hole cutter
Description
FIG. 1 is a front left side perspective view of a hole cutter showing my new design;
FiG. 2 is a bottom plan view;
FIG. 3 is a front elevational view;
FIG. 4 is a top plan view; and
FIG. 5 is a right side elevational view thereof.
Referenced Cited
U.S. Patent Documents
Other references
20192 | May 1858 | Clark |
D138187 | July 1944 | Smith |
D138188 | July 1944 | Smith |
D169572 | May 1953 | Ament |
D206132 | November 1966 | Schmitt |
D240763 | July 1976 | Clemens |
D305295 | January 2, 1990 | Momany |
448126 | March 1891 | Craig |
765877 | July 1904 | Brownstein |
1316485 | September 1919 | Kay |
3180018 | December 1960 | Hougen |
4072441 | February 7, 1978 | Lapointe |
- Popular Science, 12/1973, p. 127, Stanley "Electrichisel" Ad.
Patent History
Patent number: D317455
Type: Grant
Filed: Jan 21, 1988
Date of Patent: Jun 11, 1991
Inventor: Louis G. Martin (Clio, MI)
Primary Examiner: Nelson C. Holtje
Assistant Examiner: Gary D. Watson
Attorney: Donald C. Bolger
Application Number: 7/146,749
Type: Grant
Filed: Jan 21, 1988
Date of Patent: Jun 11, 1991
Inventor: Louis G. Martin (Clio, MI)
Primary Examiner: Nelson C. Holtje
Assistant Examiner: Gary D. Watson
Attorney: Donald C. Bolger
Application Number: 7/146,749
Classifications
Current U.S. Class:
Cutting Tool, E.g., Drill Bit, Etc. (D15/139);
D 8/70