US2874795A
Expired / Lapsed
US
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Method and apparatus for determining the travel times of a signal propagated over a plurality of paths
Assignee: ConocoPhillips Co
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Filing: 1954-10-20
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Granted: 1959-02-24
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Expires: 1974-10-20
Abstract
No abstract record available.
Inventors
- 👤 William E N Doty
- 👤 Milford R Lee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:58
CPC Classifications
G; G01; G01V; G01V1/00; G01V1/003; G01V1/005
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) | 1962-02-23 | 1962-08-25 | 1963-02-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-02-23 | 1966-08-25 | 1967-02-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-02-23 | 1970-08-25 | 1971-02-24 | $7700.00 | Window Closed / Lapsed |