USD310686SExpiredUtility

Architectural learning device

32
Assignee: PATAIL ENTPR INCPriority: Feb 13, 1987Filed: Feb 13, 1987Granted: Sep 18, 1990
Est. expiryFeb 13, 2007(expired)· nominal 20-yr term from priority
Inventors:Timothy L. TacquardPatricia B. Gillfillan
32
PatentIndex Score
4
Cited by
4
References
1
Claims

Claims

exact text as granted — not AI-modified
The ornamental design for an architectural learning device, as shown and described.

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