USD309867SExpiredUtility

PH meter

81
Assignee: BECKMAN INSTRUMENTS INCPriority: Sep 16, 1987Filed: Sep 16, 1987Granted: Aug 14, 1990
Est. expirySep 16, 2007(expired)· nominal 20-yr term from priority
Inventors:Ronald C. Johnson
81
PatentIndex Score
20
Cited by
5
References
1
Claims

Claims

exact text as granted — not AI-modified
The ornamental design for a pH meter, as shown.

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