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US2628267A
Expired / Lapsed
US
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Electric line fault locators
Assignee: Individual
•
Filing: 1949-03-31
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Granted: 1953-02-10
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Expires: 1969-03-31
Abstract
No abstract record available.
Inventors
- 👤 Theodore W Stringfield
- 👤 Richard F Stevens
- 👤 Lyman R Spaulding
- 👤 Warren V Behrens
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:13
CPC Classifications
G; G01; G01R; G01R31/00; G01R31/08; G01R31/11
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2146769A
Cited
US2253975A
Cited
US2345932A
Cited
US2315450A
Cited
US2473208A
Cited
US2493800A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-02-10 | 1956-08-11 | 1957-02-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-02-10 | 1960-08-11 | 1961-02-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-02-10 | 1964-08-11 | 1965-02-10 | $7700.00 | Window Closed / Lapsed |