USD328256SExpiredUtility

Protractor

32
Assignee: POLYDRON UK LTDPriority: Dec 8, 1989Filed: Jun 1, 1990Granted: Jul 28, 1992
Est. expiryDec 8, 2009(expired)· nominal 20-yr term from priority
Inventors:Edward Harvey
32
PatentIndex Score
3
Cited by
8
References
1
Claims

Claims

exact text as granted — not AI-modified
The ornamental design for a protractor, as shown.

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