IP Library › Granted Patent US 6,634,427
Granted Patent Utility Small
US 6,634,427 · Confirmation No. 4163

DRILL STRING SECTION WITH INTERNAL PASSAGE

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 Code Description Pages PDF
2024-01-09 N570 Communication - Re: Power of Attorney (PTOL-308) 1 View
2024-01-09 N570 Communication - Re: Power of Attorney (PTOL-308) 1 View
2024-01-03 PA.. Power of Attorney 2 View
2024-01-03 R3.73 Assignee showing of ownership per 37 CFR 3.73 3 View
2024-01-03 N417 Electronic Filing System Acknowledgment Receipt 2 View
2016-03-24 OATH Oath or Declaration filed 4 View
2016-03-14 OATH Oath or Declaration filed 4 View
2014-06-06 OATH Oath or Declaration filed 23 View
2003-08-04 IFEE Issue Fee Payment (PTO-85B) 1 View
2002-03-11 TRNA Transmittal of New Application 6 View
2002-03-11 SPEC Specification 9 View
2002-03-11 CLM Claims 6 View
2002-03-11 ABST Abstract 1 View
2002-03-11 DRW Drawings-only black and white line drawings 3 View
2002-03-11 OATH Oath or Declaration filed 6 View
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Quick Facts
Patent No.
US 6,634,427
App. No.
10/095,174
Filed
2002-03-11
Granted
2003-10-21
Art Unit
3672
PTA
0 days