Patent US2604126A successfully refreshed from Google Patents.
Patent US3486107A successfully refreshed from Google Patents.
US3486107A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Logging while drilling apparatus employing potted electronic components
Assignee: Texaco Inc
•
Filing: 1967-11-24
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Granted: 1969-12-23
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Expires: 1987-11-24
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
2026-11-06 10:35
CPC Classifications
E; E21; E21B; E21B47/00; E21B47/12; E21B21/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US3020471A
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US3134069A
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US3141999A
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US3299403A
Cited
US3293542A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-12-22 | 1973-06-23 | 1973-12-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-12-22 | 1977-06-23 | 1977-12-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-12-22 | 1981-06-23 | 1981-12-23 | $7700.00 | Window Closed / Lapsed |