USD253581SExpiredUtility

Four way corner level

72
Assignee: VY DAWN INCPriority: Jun 30, 1977Filed: Jun 30, 1977Granted: Dec 4, 1979
Est. expiryJun 30, 1997(expired)· nominal 20-yr term from priority
Inventors:Robert H. Vanderwerf
72
PatentIndex Score
11
Cited by
6
References
1
Claims

Claims

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

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