USD345707SExpiredUtility

Dust sensor device

Assignee: PHILIPS CORPPriority: Dec 18, 1992Filed: Dec 18, 1992Granted: Apr 5, 1994

Est. expiryDec 18, 2012(expired)· nominal 20-yr term from priority

PatentIndex Score

107

Cited by

References

Claims

exact text as granted — not AI-modified

The ornamental design for a dust sensor device, as shown.

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