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App. No. 10/677,137 · Confirmation No. 3916

PRODUCTION PROCESS FOR FE-BASED SINTERED ALLOY VALVE SEAT

Patent Expired Due to NonPayment of Maintenance Fees Under 37 CFR 1.362 View Patent ↗ View Publication ↗
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Quick Facts
App. No.
10/677,137
Filed
2003-09-30
Granted
2004-09-21
Pub. No.
US20040131492A1
Art Unit
1742
PTA
-4 days