Patent US2601522A successfully refreshed from Google Patents.
US2601522A
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Method for geophysical exploration
Assignee: Individual
•
Filing: 1946-02-28
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Granted: 1952-06-24
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Expires: 1966-02-28
Abstract
No abstract record available.
Inventors
- 👤 Carl A Heiland
- 👤 Matthew T Murray
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:40
CPC Classifications
G; G01; G01V; G01V1/00; G01V1/02; G01V1/104
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB191128030A
Cited
CH81732A
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US1724720A
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GB367858A
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US2317415A
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US2419414A
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US2399211A
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US2407093A
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US2413680A
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US2340314A
Cited
US2384851A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-06-24 | 1955-12-24 | 1956-06-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-06-24 | 1959-12-24 | 1960-06-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-06-24 | 1963-12-24 | 1964-06-24 | $7700.00 | Window Closed / Lapsed |