US2943694A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for exploring boreholes
Assignee: Schlumberger Well Surveying Corp
•
Filing: 1954-05-17
•
Granted: 1960-07-05
•
Expires: 1974-05-17
Abstract
No abstract record available.
Inventors
- 👤 Goodman Clark
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 03:06
CPC Classifications
G; G01; G01V; G01V11/00; G01V11/002; G01V11/005; G01V1/00; G01V1/40; G01V1/44; G01V1/46; Y; Y10; Y10S; Y10S367/00; Y10S367/911
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2191120A
Cited
US2355826A
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US2439130A
Cited
US2592135A
Cited
US2604181A
Cited
US2633484A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-07-05 | 1964-01-04 | 1964-07-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-07-05 | 1968-01-04 | 1968-07-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-07-05 | 1972-01-04 | 1972-07-05 | $7700.00 | Window Closed / Lapsed |