USD284487SExpiredUtility

Aural/visual signalling instrument

86
Assignee: PRATT RICHARD JPriority: May 20, 1983Filed: May 20, 1983Granted: Jul 1, 1986
Est. expiryMay 20, 2003(expired)· nominal 20-yr term from priority
Inventors:Richard J. Pratt
86
PatentIndex Score
26
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1
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Claims

exact text as granted — not AI-modified
The ornamental design for an aural/visual signalling instrument, as shown and described.

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