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App. No. 09/991,472 · Confirmation No. 3785

SWITCHING VALVE WITH FLOW DIRECTION-DEPENDENT CROSS-SECTION

Patent Expired Due to NonPayment of Maintenance Fees Under 37 CFR 1.362 View Patent ↗ View Publication ↗
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 Code Description Pages PDF
2003-08-20 IFEE Issue Fee Payment (PTO-85B) 1 View
2001-11-21 TRNA Transmittal of New Application 3 View
2001-11-21 SPEC Specification 15 View
2001-11-21 CLM Claims 2 View
2001-11-21 ABST Abstract 1 View
2001-11-21 DRW Drawings-only black and white line drawings 8 View
2001-11-21 OATH Oath or Declaration filed 3 View
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Quick Facts
App. No.
09/991,472
Filed
2001-11-21
Granted
2003-10-21
Pub. No.
US20020078997A1
Art Unit
3753
PTA
-13 days