IP Library › Granted Patent US 6,681,412
Granted Patent Utility
US 6,681,412 · Confirmation No. 4765

PTFE MEMBRANE FILTER FOR EXHAUST AIR OF VACUUM TOILET SYSTEM

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 Code Description Pages PDF
2003-12-11 IFEE Issue Fee Payment (PTO-85B) 2 View
2002-08-30 TRNA Transmittal of New Application 1 View
2002-08-30 SPEC Specification 18 View
2002-08-30 CLM Claims 6 View
2002-08-30 ABST Abstract 1 View
2002-08-30 DRW Drawings-only black and white line drawings 6 View
2002-08-30 OATH Oath or Declaration filed 4 View
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Quick Facts
Patent No.
US 6,681,412
App. No.
10/232,354
Filed
2002-08-30
Granted
2004-01-27
Pub. No.
US20030145372A1
Art Unit
3743
PTA
0 days