Holding pattern rotary calculator

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Description

FIG. 1 is a top perspective view of a holding pattern rotary calculator showing my new design;

FIG. 2 is a side elevational view thereof;

FIG. 3 is a top plan view thereof; and,

FIG. 4 is a bottom view thereof.

Referenced Cited
U.S. Patent Documents
D201385 June 1965 Pelletier
D271382 November 15, 1983 Stein
3136595 June 1964 Holt
3500413 March 1970 Dohogne
3589327 June 1971 Jacobs
3698630 October 1972 Dick et al.
3835299 September 1974 Turney
4317404 March 2, 1982 Lombardo
Foreign Patent Documents
509786 August 1976 SUX
Other references
  • Architectural Record, Oct. 1956, Circular calculating device, p. 308-bottom right.
Patent History
Patent number: D338683
Type: Grant
Filed: Jul 6, 1990
Date of Patent: Aug 24, 1993
Inventor: Lynn Erickson (Belt, MT)
Primary Examiner: Alan P. Douglas
Assistant Examiner: Ann Hunt
Attorney: Terry M. Gernstein
Application Number: 7/548,772
Classifications
Current U.S. Class: Rotary (D18/10)