Patent US2438217A successfully refreshed from Google Patents.
US2438217A
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Method for elimination of periodic stray signals from seismic signals
Assignee: ExxonMobil Oil Corp
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Filing: 1944-06-30
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Granted: 1948-03-23
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Expires: 1964-06-30
Abstract
No abstract record available.
Inventors
- 👤 Curtis H Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:18
CPC Classifications
G; G01; G01V; G01V1/00; G01V1/28; G01V1/36; G01V1/364
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2294627A
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US2346369A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-03-23 | 1951-09-22 | 1952-03-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-03-23 | 1955-09-22 | 1956-03-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-03-23 | 1959-09-22 | 1960-03-23 | $7700.00 | Window Closed / Lapsed |