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United States Patent D283,137
Hamar March 25, 1986

Combined calculator and protective case


The ornamental design for a combined calculator and protective case, as shown and described.
Inventors: Hamar; Christopher J. (Leeds, GB2)
Assignee: Zengrange Limited (Leeds, GB2)
Appl. No.: 06/516,896
Filed: July 25, 1983

Foreign Application Priority Data

Jan 25, 1983 [GB] 1011046

Current U.S. Class: D18/2 ; D18/11; D18/7; D3/272
Field of Search: D3/301,33-36,72-74,76 206/387,328,332-334,445,305,521 D18/2,11,67

References Cited

U.S. Patent Documents
D236488 August 1975 Fossella
D245455 August 1977 Cathey
D275822 October 1984 Gatland et al.
4071065 January 1978 Halbich
4259568 March 1981 Dynesen
4322835 March 1982 Ernst et al.
4424899 January 1984 Rosenberg
4458813 July 1984 Tushinsky et al.
Primary Examiner: Word; George P.
Attorney, Agent or Firm: Murray, Whisenhunt and Ferguson


FIG. 1 is a top perspective view of a combined calculator and protective case showing my new design;

FIG. 2 is an inverted bottom perspective view thereof with the latch partly open;

FIG. 3 is an inverted bottom rear perspective view of FIG. 1;

FIG. 4 is a top rear perspective view of FIG. 1;

FIG. 5 is a top perspective view thereof in the open position showing both top and bottom surfaces;

FIG. 6 is a left front perspective view with the cover partly open; and

FIG. 7 is a right front perspective view with the cover partly open.

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