USD379371SExpiredUtility

Perspective drawing device

51
Assignee: DRAWING DIRECTIONS INCPriority: Apr 14, 1993Filed: Apr 14, 1993Granted: May 20, 1997
Est. expiryApr 14, 2013(expired)· nominal 20-yr term from priority
Inventors:Danny B. NichollJames M. Brech
51
PatentIndex Score
11
Cited by
54
References
1
Claims

Claims

exact text as granted — not AI-modified
The ornamental design for a perspective drawing device, as shown and described.

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