IP Library Granted Patent US 6,638,154
Granted Patent Utility
US 6,638,154 · Confirmation No. 9620

THRUST COLLAR FOR ENCASING NATURAL CASINGS, AND METHOD OF USE THEREOF

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2003-08-04 IFEE Issue Fee Payment (PTO-85B) 1 View
2002-10-23 TRNA Transmittal of New Application 2 View
2002-10-23 ADS Application Data Sheet 8 View
2002-10-23 SPEC Specification 5 View
2002-10-23 CLM Claims 2 View
2002-10-23 ABST Abstract 1 View
2002-10-23 DRW Drawings-only black and white line drawings 3 View
2002-10-23 OATH Oath or Declaration filed 4 View
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Quick Facts
Patent No.
US 6,638,154
App. No.
10/278,618
Filed
2002-10-23
Granted
2003-10-28
Art Unit
3644
PTA
0 days