IP Library › Granted Patent US 6,644,336
Granted Patent Utility
US 6,644,336 · Confirmation No. 3846

METHOD AND APPARATUS FOR AUTOMATIC SHUTOFF OF A VALVE WHEN A SUBSTANCE IS PRESENT IN A FLOW OF FLUID

Inventor: Lyman J. Dolan
Patented Case View Patent ↗ View Publication ↗
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2021-02-16 OATH Oath or Declaration filed 26 View
2011-08-19 N570 Communication - Re: Power of Attorney (PTOL-308) 1 View
2011-08-19 N570 Communication - Re: Power of Attorney (PTOL-308) 1 View
2003-09-11 IFEE Issue Fee Payment (PTO-85B) 3 View
2001-06-12 TRNA Transmittal of New Application 2 View
2001-06-12 SPEC Specification 13 View
2001-06-12 CLM Claims 12 View
2001-06-12 ABST Abstract 1 View
2001-06-12 DRW Drawings-only black and white line drawings 8 View
2001-06-12 OATH Oath or Declaration filed 1 View
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Quick Facts
Patent No.
US 6,644,336
App. No.
09/879,379
Filed
2001-06-12
Granted
2003-11-11
Pub. No.
US20020185174A1
Art Unit
3753
PTA
-1 days