USD253818SExpiredUtility

Film spool

41
Assignee: MINNESOTA MINING & MFGPriority: Dec 28, 1977Filed: Dec 28, 1977Granted: Jan 1, 1980
Est. expiryDec 28, 1997(expired)· nominal 20-yr term from priority
Inventors:Alan C. Kilberg, Jr.
41
PatentIndex Score
5
Cited by
0
References
1
Claims

Claims

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

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