Retractable double blade knife

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Description

FIG. 1 is a right side elevational view of a retractable double blade knife showing our new design;

FIG. 2 is a top plan view thereof.

FIG. 3 is a left side elevational view thereof.

FIG. 4 is a bottom plan view thereof.

FIG. 5 is a front elevational view thereof, the rear view being substantially the same.

Referenced Cited
U.S. Patent Documents
972305 October 1910 Whittemore
3316635 May 1967 Merrow et al.
3520059 July 1970 Gringer
3906627 September 1975 Manning
Foreign Patent Documents
211377 March 1956 AUX
Other references
  • Martor-Argentax brochure, 1977 edition, p. No. 1, item 67-1-77.
Patent History
Patent number: D310474
Type: Grant
Filed: Jan 19, 1988
Date of Patent: Sep 11, 1990
Inventors: Daniel Bartsch (McMechen, WV), Jane A. Bartsch (McMechen, WV)
Primary Examiner: Bruce W. Dunkins
Assistant Examiner: Clare E. Heflin
Attorney: Richard C. Litman
Application Number: 7/145,198
Classifications
Current U.S. Class: D 8/99; D/8107