IP Library › Granted Patent US 6,425,449
Granted Patent Utility
US 6,425,449 · Confirmation No. 9952

UP-HOLE PUMP-IN CORE BARREL APPARATUS

Inventor: John C. Marshall
Patented Case View Patent ↗
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 Code Description Pages PDF
2008-07-23 N570 Communication - Re: Power of Attorney (PTOL-308) 1 View
2008-07-23 N570 Communication - Re: Power of Attorney (PTOL-308) 1 View
2008-07-13 PA.. Power of Attorney 2 View
2008-07-13 N417 Electronic Filing System Acknowledgment Receipt 2 View
2008-07-13 R3.73 Assignee showing of ownership per 37 CFR 3.73 2 View
2007-07-26 PA.. Power of Attorney 1 View
2007-07-26 N417 Electronic Filing System Acknowledgment Receipt 2 View
2001-02-08 TRNA Transmittal of New Application 3 View
2001-02-08 SPEC Specification 21 View
2001-02-08 CLM Claims 8 View
2001-02-08 ABST Abstract 1 View
2001-02-08 DRW Drawings-only black and white line drawings 4 View
2001-02-08 OATH Oath or Declaration filed 3 View
2001-02-08 TRNA Transmittal of New Application 3 View
2001-02-08 SPEC Specification 21 View
2001-02-08 CLM Claims 8 View
2001-02-08 ABST Abstract 1 View
2001-02-08 DRW Drawings-only black and white line drawings 4 View
2001-02-08 OATH Oath or Declaration filed 3 View
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Quick Facts
Patent No.
US 6,425,449
App. No.
09/779,258
Filed
2001-02-08
Granted
2002-07-30
Examiner
TSAY, FRANK
Art Unit
3672
PTA
0 days