Patent US2626525A successfully refreshed from Google Patents.
US2626525A
Expired / Lapsed
US
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Apparatus for aerogravimetric prospecting
Assignee: Individual
•
Filing: 1946-07-08
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Granted: 1953-01-27
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Expires: 1966-07-08
Abstract
No abstract record available.
Inventors
- 👤 Carl A Heiland
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 14:12
CPC Classifications
G; G01; G01V; G01V7/00; G01V7/16
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE586909C
Cited
US2190959A
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US2253472A
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US2358103A
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US2362135A
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US2383966A
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US2384739A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-01-27 | 1956-07-28 | 1957-01-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-01-27 | 1960-07-28 | 1961-01-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-01-27 | 1964-07-28 | 1965-01-27 | $7700.00 | Window Closed / Lapsed |