Patent US2302247A successfully refreshed from Google Patents.
US2302247A
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Well surveying method and apparatus
Assignee: Well Surveys Inc
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Filing: 1940-04-22
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Granted: 1942-11-17
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Expires: 1960-04-22
Abstract
No abstract record available.
Inventors
- 👤 Neufeld Jacob
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:51
CPC Classifications
G; G01; G01V; G01V5/00; G01V5/04; G01V5/08; G01V5/10; G01V5/101
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) | 1945-11-16 | 1946-05-18 | 1946-11-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1949-11-16 | 1950-05-18 | 1950-11-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1953-11-16 | 1954-05-18 | 1954-11-17 | $7700.00 | Window Closed / Lapsed |