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US2575340A
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Determination of ground constants
Assignee: Individual
•
Filing: 1946-03-07
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Granted: 1951-11-20
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Expires: 1966-03-07
Abstract
No abstract record available.
Inventors
- 👤 Maxwell K Goldstein
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 06:16
CPC Classifications
G; G01; G01V; G01V3/00; G01V3/12; G01S; G01S13/00; G01S13/02; G01S13/0209
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2139460A
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US2134716A
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US2172778A
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US2317259A
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US2405239A
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US2389432A
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US2408048A
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US2364209A
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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) | 1954-11-19 | 1955-05-21 | 1955-11-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-11-19 | 1959-05-21 | 1959-11-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-11-19 | 1963-05-21 | 1963-11-20 | $7700.00 | Window Closed / Lapsed |