Manual calculator

Description

FIG. 1 is a perspective view showing my new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a right side elevational view thereof, the left side elevational view being identical;

FIG. 5 is a top plan view thereof, the bottom plan view being identical; and,

FIG. 6 is a perspective view thereof with the inner slide card extending partially out from the outer casing.

Referenced Cited
U.S. Patent Documents
D224259 July 1972 Raimondi
3091389 May 1963 Wiken
4028529 June 7, 1977 Van De Weghe
4149330 April 17, 1979 Huff
4308450 December 29, 1981 Ausman et al.
Patent History
Patent number: D383774
Type: Grant
Filed: Apr 30, 1996
Date of Patent: Sep 16, 1997
Inventor: Kirk T. Winn (Redondo Beach, CA)
Primary Examiner: Caron D. Veynar
Attorneys: Gordon R. Lindeen, III, Wanda K. Denson-Low
Application Number: 0/53,811
Classifications
Current U.S. Class: Slide Rule Type (D18/9)
International Classification: 1801;