PH meter
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Description
FIG. 1 is a top plan, front and left side perspective view of a pH meter showing my new design;
FIG. 2 is a bottom plan, rear, and right side perspective view; and
FIG. 3 is a top plan, front, and left side perspective view of another embodiment of FIGS. 1 and 2 thereof.
Referenced Cited
Patent History
Patent number: D309867
Type: Grant
Filed: Sep 16, 1987
Date of Patent: Aug 14, 1990
Assignee: Beckman Instruments, Inc. (Fullerton, CA)
Inventor: Ronald C. Johnson (Fullerton, CA)
Primary Examiner: Nelson C. Holtje
Assistant Examiner: Antoinc D. Davis
Attorneys: William H. May, Paul R. Harder
Application Number: 7/97,466
Type: Grant
Filed: Sep 16, 1987
Date of Patent: Aug 14, 1990
Assignee: Beckman Instruments, Inc. (Fullerton, CA)
Inventor: Ronald C. Johnson (Fullerton, CA)
Primary Examiner: Nelson C. Holtje
Assistant Examiner: Antoinc D. Davis
Attorneys: William H. May, Paul R. Harder
Application Number: 7/97,466
Classifications
Current U.S. Class:
Chemical (12) (D10/81)