PH Testing device

- J & M Instruments Corp.
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Description

FIG. 1 is a plan view of the pH testing device showing my new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a side elevational view thereof;

FIG. 5 is an elevational view showing the opposite side;

FIG. 6 is a bottom view thereof.

Referenced Cited
U.S. Patent Documents
D181743 December 1957 Molloy
D186908 December 1959 Parmater
D206004 October 1966 Perkins
D211058 May 1968 Neubrech
D215238 September 1969 Seidel
D223293 April 1972 Banks
D223359 April 1972 Anderson
D225005 October 1972 Greene
D225743 January 1973 Seltzer
D226271 February 1973 Holtzman
D237982 December 1975 Hoogesteger
3806797 April 1974 Harvey
Patent History
Patent number: D249480
Type: Grant
Filed: Aug 2, 1976
Date of Patent: Sep 19, 1978
Assignee: J & M Instruments Corp. (Farmingdale, NY)
Inventor: Maury Jungman (Bayville, NY)
Primary Examiner: Nelson C. Holtje
Attorney: Seth Natter
Application Number: 5/711,096
Classifications
Current U.S. Class: Chemical (12) (D10/81); D10/56X
International Classification: D1004;