USD283515SExpiredUtility

Combined ruler and solar cell calculator

79
Assignee: LI ROBERT S KPriority: May 20, 1983Filed: Aug 2, 1983Granted: Apr 22, 1986
Est. expiryMay 20, 2003(expired)· nominal 20-yr term from priority
Inventors:Robert Li
79
PatentIndex Score
16
Cited by
8
References
1
Claims

Claims

exact text as granted — not AI-modified
The ornamental design for a combined ruler and solar cell calculator, as shown and described.

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