US2838742A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Seismic gain control
Assignee: Pan American Petroleum Corp
•
Filing: 1951-12-29
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Granted: 1958-06-10
•
Expires: 1971-12-29
Abstract
No abstract record available.
Inventors
- 👤 Louis B Mcmanis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:40
CPC Classifications
G; G01; G01V; G01V1/00; G01V1/24; G01V1/245
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1681532A
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US2626993A
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US2255479A
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US2350951A
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US2554132A
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US2410303A
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US2558954A
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US2600051A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-06-09 | 1961-12-09 | 1962-06-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-06-09 | 1965-12-09 | 1966-06-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-06-09 | 1969-12-09 | 1970-06-10 | $7700.00 | Window Closed / Lapsed |