US2544819A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for marine seismic prospecting
Assignee: Geophysical Service Inc
•
Filing: 1947-08-29
•
Granted: 1951-03-13
•
Expires: 1967-08-29
Abstract
No abstract record available.
Inventors
- 👤 John J Babb
- 👤 Neal J Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 16:53
CPC Classifications
G; G01; G01V; G01V1/00; G01V1/38; G01V1/3843; G01V1/3852
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2407697A
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US2203894A
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US2241428A
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US2283200A
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US2423591A
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US2324378A
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US2426657A
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US2434793A
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US2449085A
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US2441236A
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US2465696A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-03-12 | 1954-09-11 | 1955-03-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-03-12 | 1958-09-11 | 1959-03-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-03-12 | 1962-09-11 | 1963-03-13 | $7700.00 | Window Closed / Lapsed |