Patent US2368532A successfully refreshed from Google Patents.
US2368532A
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Well survey method and apparatus
Assignee: Well Surveys Inc
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Filing: 1939-12-27
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Granted: 1945-01-30
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Expires: 1959-12-27
Abstract
No abstract record available.
Inventors
- 👤 Fearon Robert Earl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:50
CPC Classifications
G; G01; G01V; G01V5/00; G01V5/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1948-01-30 | 1948-07-31 | 1949-01-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1952-01-30 | 1952-07-31 | 1953-01-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1956-01-30 | 1956-07-31 | 1957-01-30 | $7700.00 | Window Closed / Lapsed |