Electronic timing and logic drafting template

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Description

FIG. 1 is a top plan view of an electronic timing and logic drafting template showing my new design, the bottom plan view being a mirror image thereof;

FIG. 2 is a side elevational view thereof;

FIG. 3 is an end elevational view thereof;

FIG. 4 is a cross-sectional view taken along line 4--4 of FIG. 1.

Referenced Cited
U.S. Patent Documents
D221993 September 1971 Crawford
2954612 October 1960 Goldberger
Other references
  • Post Professional Drafting Rm. Equipment Cat., 1969, p. 65, Item No. 2972D (H). Post Professional Drafting Rm. Equipment Cat., 1969, p. 66, Item No. 2989R (D).
Patent History
Patent number: D254314
Type: Grant
Filed: Apr 28, 1978
Date of Patent: Feb 26, 1980
Inventor: John M. Denslow (Culver City, CA)
Primary Examiner: Joel Stearman
Assistant Examiner: George P. Word
Attorney: Allan M. Shapiro
Application Number: 5/900,936
Classifications
Current U.S. Class: Curve Template Or French Curve (D19/39); Template Or Comparator Gauge (6) (D10/64)
International Classification: D1906;