Slide frame for calculator or the like

Skip to: Description  ·  References Cited  · Patent History  ·  Patent History
Description

FIG. 1 is a front elevational view of a slide frame for calculator or the like showing my new design;

FIG. 2 is a rear elevational view thereof;

FIG. 3 is a section taken on line 3--3 of FIG. 1; and

FIG. 4 is a perspective view thereof.

Referenced Cited
U.S. Patent Documents
D227408 June 1973 Hotchkiss
2179531 November 1939 Trapnell
2542834 February 1951 Peurozet
3106029 October 1963 Desmond
Foreign Patent Documents
333549 November 1903 FRX
Patent History
Patent number: D254078
Type: Grant
Filed: Jun 20, 1977
Date of Patent: Jan 29, 1980
Inventor: Gerrit A. Van Exel (Fullerton, CA)
Primary Examiner: Louis S. Zarfas
Attorney: Gerrit A. Van Exel
Application Number: 5/808,239
Classifications
Current U.S. Class: Slide Rule Type (D18/9)
International Classification: D1999;