USD453905SExpiredUtility

pH meter

Priority: Mar 5, 2001Filed: Mar 5, 2001Granted: Feb 26, 2002
Est. expiryMar 5, 2021(expired)· nominal 20-yr term from priority
Inventors:Tony Cheng
55
PatentIndex Score
14
Cited by
2
References
1
Claims

Claims

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

Join the waitlist — get patent alerts

Track USD453905S — get alerts on status changes and closely related new filings.

We store only your email — no account needed. See our privacy policy.