US2659882A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of prospecting with timed electric energy
Assignee: Individual
•
Filing: 1947-12-03
•
Granted: 1953-11-17
•
Expires: 1967-12-03
Abstract
No abstract record available.
Inventors
- 👤 William M Barret
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 07:09
CPC Classifications
G; G01; G01V; G01V3/00; G01V3/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USRE21955E
Cited
US2077707A
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US2139460A
Cited
US2268643A
Cited
US2236893A
Cited
US2412003A
Cited
US2453169A
Cited
US2364209A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-11-16 | 1957-05-18 | 1957-11-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-11-16 | 1961-05-18 | 1961-11-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-11-16 | 1965-05-18 | 1965-11-17 | $7700.00 | Window Closed / Lapsed |