USD304311SExpiredUtility

Pop-up timing device

39
Assignee: MINNESOTA MINING & MFGPriority: Jun 6, 1986Filed: Jun 6, 1986Granted: Oct 31, 1989
Est. expiryJun 6, 2006(expired)· nominal 20-yr term from priority
Inventors:Duwayne C. Radke
39
PatentIndex Score
3
Cited by
6
References
1
Claims

Claims

exact text as granted — not AI-modified
The ornamental design for a pop-up timing device, as shown and described.

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