IP Library › Granted Patent US 6,519,847
Granted Patent Utility PCT National Stage Small
US 6,519,847 · Confirmation No. 7801

SURFACE TREATMENT OF PREFINISHED VALVE SEAT INSERTS

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2002-01-16 ABST Abstract 1 View
2002-01-16 LET. Miscellaneous Incoming Letter 16 View
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Quick Facts
Patent No.
US 6,519,847
App. No.
09/719,431
Filed
2002-01-16
Effective Filing
2000-12-12
Granted
2003-02-18
Art Unit
3726
PTA
0 days