Patent CH614532A5 successfully refreshed from Google Patents.
US2688124A
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US
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Method of and apparatus for determining travel time of signals
Assignee: ConocoPhillips Co
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Filing: 1953-02-27
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Granted: 1954-08-31
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Expires: 1973-02-27
Abstract
No abstract record available.
Inventors
- 👤 William E N Doty
- 👤 John M Crawford
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 17:11
CPC Classifications
G; G01; G01V; G01V1/00; G01V1/28; G01V1/36; G01V1/364; G01V1/366; G01V1/37; G01V1/375; G04; G04F; G04F10/00; G04F10/06; G06; G06G; G06G7/00; G06G7/12; G06G7/19; G06G7/1914; G01V2210/00; G01V2210/30; G01V2210/32
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2634398A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-08-30 | 1958-03-01 | 1958-08-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-08-30 | 1962-03-01 | 1962-08-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-08-30 | 1966-03-01 | 1966-08-31 | $7700.00 | Window Closed / Lapsed |