USD251932SExpiredUtility
Combined typewriter and portable calculator
Individually held — no corporate assignee on recordPriority: Mar 18, 1977Filed: Mar 18, 1977Granted: May 22, 1979
Est. expiryMar 18, 1997(expired)· nominal 20-yr term from priority
Inventors:Leon H. Trescott
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PatentIndex Score
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Cited by
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References
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Claims
Claims
exact text as granted — not AI-modifiedThe ornamental design for a combined typewriter and portable calculator, as shown and described.
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