US2859916A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic computing apparatus
Assignee: Schlumberger Well Surveying Corp
•
Filing: 1953-06-02
•
Granted: 1958-11-11
•
Expires: 1973-06-02
Abstract
No abstract record available.
Inventors
- 👤 Doll Henri-Georges
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 09:39
CPC Classifications
G; G06; G06J; G06J1/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1977999A
Cited
US2412467A
Cited
US2415190A
Cited
US2497042A
Cited
US2463362A
Cited
US2643819A
Cited
US2669690A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-11-10 | 1962-05-12 | 1962-11-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-11-10 | 1966-05-12 | 1966-11-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-11-10 | 1970-05-12 | 1970-11-11 | $7700.00 | Window Closed / Lapsed |