pH pen case design

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Description

FIG. 1 is a top and right side perspective view of a pH pen case design showing my new design;

FIG. 2 is a left side elevational view thereof, the right side is a mirror image thereof;

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

FIG. 4 is a rear plan view thereof.

Referenced Cited
U.S. Patent Documents
D312421 November 27, 1990 Trottmann
4090925 May 23, 1978 Jungman
4912417 March 27, 1990 Gibboney et al.
5198093 March 30, 1993 Sydlowski et al.
Other references
  • Cole-Palmer; pH Electronic Paper & TDS Pocket Indicators; .COPYRGT.1989. Annual Design Review; Pocket pH; p. 84; Industrial Design.
Patent History
Patent number: D351803
Type: Grant
Filed: Mar 2, 1993
Date of Patent: Oct 25, 1994
Assignee: Newport Electronics, Inc. (Santa Ana, CA)
Inventor: Robert S. Foley (Lake Forest, CA)
Primary Examiner: Nelson C. Holtje
Assistant Examiner: Antoine D. Davis
Attorneys: Howard S. Reiter, Bruce E. Hosmer
Application Number: 0/5,349