USD282149SExpiredUtility

Audio dosimeter for detecting noise level

Assignee: DU PONTPriority: Apr 8, 1983Filed: Apr 8, 1983Granted: Jan 14, 1986

Est. expiryApr 8, 2003(expired)· nominal 20-yr term from priority

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Claims

exact text as granted — not AI-modified

The ornamental design for an audio dosimeter for detecting noise level, substantially as shown and described.

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