US3465582A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Borehole logging system
Assignee: Texaco Inc
•
Filing: 1967-12-14
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Granted: 1969-09-09
•
Expires: 1987-12-14
Abstract
No abstract record available.
Inventors
- 👤 Albert P Richter Jr
- 👤 James D Bruner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 11:10
CPC Classifications
E; E21; E21B; E21B49/00; E21B49/08; E21B49/087; E21B21/00; E21B21/08; E21B47/00; E21B47/06; E21B49/005
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-09-08 | 1973-03-10 | 1973-09-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-09-08 | 1977-03-10 | 1977-09-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-09-08 | 1981-03-10 | 1981-09-09 | $7700.00 | Window Closed / Lapsed |