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ROLL SEAL CONTROL VALVE

09/872,391 | U.S. Patent Application

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Location FILE REPOSITORY (FRANCONIA)
Filed June 1, 2001
Examiner JOHN BASTIANELLI
Class 251
Art Group 3754
Patent No. 6,557,819
Case Type Utility - 251/061100
Status Patent Expired Due to NonPayment of Maintenance Fees Under 37 CFR 1.362
Parent 09/542,312 Patented
Parent 09/243,730 Patented
Parent 08/886,905 Patented
Parent 08/427,448 Abandoned
Parent 08/103,340 Abandoned
Last Updated: 6 years, 3 months ago
Date # Transaction