USD283986SExpiredUtility

Expansible proportional rule

32
Individually held — no corporate assignee on recordPriority: Apr 13, 1983Filed: Apr 13, 1983Granted: May 27, 1986
Est. expiryApr 13, 2003(expired)· nominal 20-yr term from priority
Inventors:Gary M. Sogorka
32
PatentIndex Score
3
Cited by
5
References
1
Claims

Claims

exact text as granted — not AI-modified
The ornamental design for an expansible proportional rule, as shown and described.

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