IP Library › Patent Application 09786795
Patent Application Utility PCT National Stage
App. No. 09/786,795 · Confirmation No. 6731

AIR PURIFICATION DEVICE

Inventor: John C. Whitehead
Patent Expired Due to NonPayment of Maintenance Fees Under 37 CFR 1.362 View Patent ↗
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2003-08-27 LET. Miscellaneous Incoming Letter 2 View
2003-08-27 IFEE Issue Fee Payment (PTO-85B) 1 View
2001-07-23 LET. Miscellaneous Incoming Letter 16 View
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Quick Facts
App. No.
09/786,795
Filed
2001-07-23
Granted
2003-10-21
Art Unit
1723
PTA
0 days