Patent US2869058A successfully refreshed from Google Patents.
US2869058A
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Servosystem function generator
Assignee: Schlumberger Well Surveying Corp
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Filing: 1955-05-06
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Granted: 1959-01-13
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Expires: 1975-05-06
Abstract
No abstract record available.
Inventors
- 👤 William L Poland
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:34
CPC Classifications
G; G06; G06G; G06G7/00; G06G7/12; G06G7/26; Y; Y10; Y10T; Y10T74/00; Y10T74/18; Y10T74/18568; Y10T74/18576; Y10T74/20; Y10T74/20012; Y10T74/20201; Y10T74/21; Y10T74/2101; Y10T74/2102; Y10T74/2104
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-01-12 | 1962-07-14 | 1963-01-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-01-12 | 1966-07-14 | 1967-01-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-01-12 | 1970-07-14 | 1971-01-13 | $7700.00 | Window Closed / Lapsed |