US2740945A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Seismic prospecting system
Assignee: United Geophysical Corp
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Filing: 1953-07-06
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Granted: 1956-04-03
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Expires: 1973-07-06
Abstract
No abstract record available.
Inventors
- 👤 Edgar T Howes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 00:28
CPC Classifications
G; G01; G01V; G01V1/00; G01V1/40; G01V1/42; Y; Y10; Y10S; Y10S367/00; Y10S367/911; Y10S367/912
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
54 words
IN APPARATUS FOR SEISMIC PROSPECTING, A PRESSURERESPONSIVE CHANNEL INCLUDING A PRESSURE-SENSITIVE SEISMIC WAVE DETECTOR, A VELOCITY-RESPONSIVE CHANNEL INCLUDING A VELOCITY-SENSITIVE WAVE DETECTOR, MEANS FOR SUPPORTING SAID DETECTORS AT POINTS OF THE EARTH THAT ARE SPACED APART A DISTANCE THAT IS SMALL COMPARED WITH THE LENGTHS OF THE SEISMIC WAVES TO BE DETECTED, AND MEANS
Claim 2
Dependent Claim
54 words
IN APPARATUS FOR SEISMIC PROSPECTING, A PRESSURERESPONSIVE CHANNEL INCLUDING A PRESSURE-SENSITIVE SEISMIC WAVE DETECTOR, A VELOCITY-RESPONSIVE CHANNEL INCLUDING A VELOCITY-SENSITIVE WAVE DETECTOR, MEANS FOR SUPPORTING SAID DETECTORS AT POINTS OF THE EARTH THAT ARE SPACED APART A DISTANCE THAT IS SMALL COMPARED WITH THE LENGTHS OF THE SEISMIC WAVES TO BE DETECTED, AND MEANS
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) | 1959-04-03 | 1959-10-03 | 1960-04-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-04-03 | 1963-10-03 | 1964-04-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-04-03 | 1967-10-03 | 1968-04-03 | $7700.00 | Window Closed / Lapsed |