US2650067A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for logging wells while drilling
Assignee: Individual
•
Filing: 1948-12-13
•
Granted: 1953-08-25
•
Expires: 1968-12-13
Abstract
No abstract record available.
Inventors
- 👤 Philip W Martin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 03:23
CPC Classifications
E; E21; E21B; E21B17/00; E21B17/003; E21B47/00; E21B47/12; G; G01; G01V; G01V3/00; G01V3/18; G01V3/20; G01V3/24
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USRE21102E
Cited
US2070912A
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US2085664A
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US2249769A
Cited
FR855599A
Cited
US2247417A
Cited
US2370818A
Cited
US2400170A
Cited
US2569390A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-08-24 | 1957-02-23 | 1957-08-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-08-24 | 1961-02-23 | 1961-08-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-08-24 | 1965-02-23 | 1965-08-25 | $7700.00 | Window Closed / Lapsed |