IP Library › Granted Patent US 6,732,686
Granted Patent Utility PCT National Stage
US 6,732,686 · Confirmation No. 8883

VALVE OPENING MECHANISM

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2004-03-30 IFEE Issue Fee Payment (PTO-85B) 3 View
2004-03-12 LET. Miscellaneous Incoming Letter 3 View
2004-03-12 DRW Drawings-only black and white line drawings 8 View
2001-08-31 LET. Miscellaneous Incoming Letter 24 View
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Quick Facts
Patent No.
US 6,732,686
App. No.
09/890,150
Filed
2001-08-31
Effective Filing
2001-07-27
Granted
2004-05-11
Art Unit
3748
PTA
0 days