USD246461SExpiredUtility

Darkroom exposure meter and densitometer

34
Individually held — no corporate assignee on recordPriority: Feb 6, 1976Filed: Feb 6, 1976Granted: Nov 22, 1977
Est. expiryFeb 6, 1996(expired)· nominal 20-yr term from priority
Inventors:Darwin E. Chapman
34
PatentIndex Score
2
Cited by
5
References
1
Claims

Claims

exact text as granted — not AI-modified
The ornamental design for a darkroom exposure meter and densitometer, as shown.

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