US2907949A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cable fault locator
Assignee: Individual
•
Filing: 1955-10-21
•
Granted: 1959-10-06
•
Expires: 1975-10-21
Abstract
No abstract record available.
Inventors
- 👤 Robert A Rogers
- 👤 Herbert V Johnson
- 👤 Russell E Rowell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 08:23
CPC Classifications
G; G01; G01R; G01R31/00; G01R31/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2091521A
Cited
US2123545A
Cited
FR855995A
Cited
US2235533A
Cited
US2378440A
Cited
US2461111A
Cited
US2688116A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-10-05 | 1963-04-06 | 1963-10-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-10-05 | 1967-04-06 | 1967-10-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-10-05 | 1971-04-06 | 1971-10-06 | $7700.00 | Window Closed / Lapsed |