US2500125A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sidewall coring device
Assignee: Standard Oil Development Co
•
Filing: 1945-06-25
•
Granted: 1950-03-07
•
Expires: 1965-06-25
Abstract
No abstract record available.
Inventors
- 👤 Theodore A Huber
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 11:52
CPC Classifications
E; E21; E21B; E21B49/00; E21B49/02; E21B49/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2122754A
Cited
US2262117A
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US2315921A
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US2299076A
Cited
US2344598A
Cited
US2317544A
Cited
US2378602A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-03-06 | 1953-09-05 | 1954-03-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-03-06 | 1957-09-05 | 1958-03-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-03-06 | 1961-09-05 | 1962-03-07 | $7700.00 | Window Closed / Lapsed |