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
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
Other references
  • 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
Classifications
Current U.S. Class: Cutting Tool, E.g., Drill Bit, Etc. (D15/139); D 8/70