USD336864SExpiredUtility

Back-up warning signal

73
Assignee: DESIGNTECH INT INCPriority: Oct 31, 1991Filed: Oct 31, 1991Granted: Jun 29, 1993
Est. expiryOct 31, 2011(expired)· nominal 20-yr term from priority
Inventors:Mark Gottlieb
73
PatentIndex Score
16
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4
References
1
Claims

Claims

exact text as granted — not AI-modified
The ornamental design for back-up warning signal, as shown and described.

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