US2483718A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Phase selective signal transmission system
Assignee: Schlumberger Well Surveying Corp
•
Filing: 1946-02-28
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Granted: 1949-10-04
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Expires: 1966-02-28
Abstract
No abstract record available.
Inventors
- 👤 Charles B Aiken
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 14:14
CPC Classifications
H; H04; H04L; H04L5/00; H04L5/02; H04L5/12; G; G01; G01V; G01V3/00; G01V3/18; G01V3/34
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US579473A
Cited
US1813929A
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US2111352A
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US2100467A
Cited
US2300505A
Cited
US2298794A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-10-03 | 1953-04-04 | 1953-10-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-10-03 | 1957-04-04 | 1957-10-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-10-03 | 1961-04-04 | 1961-10-04 | $7700.00 | Window Closed / Lapsed |