USD243931SExpiredUtility

Spherical spirit level

44
Individually held — no corporate assignee on recordPriority: Aug 7, 1975Filed: Aug 7, 1975Granted: Apr 5, 1977
Est. expiryAug 7, 1995(expired)· nominal 20-yr term from priority
Inventors:Richard A. PitkinStanley T. Beale
44
PatentIndex Score
7
Cited by
7
References
1
Claims

Claims

exact text as granted — not AI-modified
The ornamental design for a spherical spirit level, as shown and described.

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