Granted Patent
Utility
US 6,791,470
· Confirmation No. 4630
REDUCING INJECTION LOSS IN DRILL STRINGS
Inventor:
Douglas S. Drumheller
Patented Case
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Code | Description | Pages | ||
|---|---|---|---|---|---|
| 2004-07-23 | IFEE |
Issue Fee Payment (PTO-85B) | 1 | View | |
| 2004-07-23 | C.AD |
Change of Address | 1 | View | |
| 2001-06-01 | TRNA |
Transmittal of New Application | 5 | View | |
| 2001-06-01 | SPEC |
Specification | 40 | View | |
| 2001-06-01 | CLM |
Claims | 7 | View | |
| 2001-06-01 | ABST |
Abstract | 1 | View | |
| 2001-06-01 | DRW |
Drawings-only black and white line drawings | 16 | View | |
| 2001-06-01 | OATH |
Oath or Declaration filed | 4 | View |
Inventors
Douglas S. Drumheller
Cedar Crest, NM
Attorneys & Agents of Record
Classification
USPC
340/854.4
Prosecution
- Examiner
- EDWARDS JR, TIMOTHY
- Art Unit
- 2635
- Docket No.
- SD-6735
- Confirmation No.
- 4630
Patent Term Adjustment
0days
No related applications found.
from
SANDIA CORPORATION
CHANGE OF NAME
Recorded 2017-11-03
ASSIGNMENT OF ASSIGNOR'S INTEREST
Recorded 2002-01-07
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Quick Facts
- Patent No.
- US 6,791,470
- App. No.
- 09/872,907
- Filed
- 2001-06-01
- Granted
- 2004-09-14
- Examiner
- EDWARDS JR, TIMOTHY
- Art Unit
- 2635
- PTA
- 0 days
External Links