US2508772A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of geophysical prospecting
Assignee: Well Surveys Inc
•
Filing: 1945-09-12
•
Granted: 1950-05-23
•
Expires: 1965-09-12
Abstract
No abstract record available.
Inventors
- 👤 Pontecorvo Bruno
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 14:45
CPC Classifications
G; G01; G01V; G01V5/00; G01V5/04; G01V5/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2186268A
Cited
US2220509A
Cited
US2296176A
Cited
US2289926A
Cited
US2295738A
Cited
US2382609A
Cited
US2284345A
Cited
US2390433A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-05-22 | 1953-11-21 | 1954-05-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-05-22 | 1957-11-21 | 1958-05-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-05-22 | 1961-11-21 | 1962-05-23 | $7700.00 | Window Closed / Lapsed |