USD316144SExpiredUtility

Refractometer

Assignee: CANON KKPriority: Feb 12, 1988Filed: Aug 9, 1988Granted: Apr 9, 1991

Est. expiryFeb 12, 2008(expired)· nominal 20-yr term from priority

PatentIndex Score

Cited by

References

Claims

exact text as granted — not AI-modified

The ornamental design for a refractometer, as shown and described.

Join the waitlist — get patent alerts

Track USD316144S — get alerts on status changes and closely related new filings.

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