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US2769096A
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Multiple-target sources of radioactive radiations and methods employing the same
Assignee: Schlumberger Well Surveying Corp
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Filing: 1952-04-09
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Granted: 1956-10-30
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Expires: 1972-04-09
Abstract
No abstract record available.
Inventors
- 👤 Jr Hugh B Frey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 07:52
CPC Classifications
H; H05; H05H; H05H3/00; H05H3/06; G; G01; G01V; G01V5/00; G01V5/04; G01V5/08; G21; G21G; G21G4/00; G21G4/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1836569A
Cited
US2287620A
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US2287619A
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US2334262A
Cited
US2600151A
Cited
US2489436A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-10-30 | 1960-04-30 | 1960-10-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-10-30 | 1964-04-30 | 1964-10-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-10-30 | 1968-04-30 | 1968-10-30 | $7700.00 | Window Closed / Lapsed |