USD323347SExpiredUtility
Perpetual calendar
Est. expiryAug 8, 2009(expired)· nominal 20-yr term from priority
Inventors:Marcelo Vlassich
26
PatentIndex Score
5
Cited by
5
References
1
Claims
Claims
exact text as granted — not AI-modifiedThe ornamental design for a perpetual calendar, as shown and described.
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