Patent US2162239A successfully refreshed from Google Patents.
US2709784A
Expired / Lapsed
US
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Transmission line fault locator
Assignee: Individual
•
Filing: 1949-10-19
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Granted: 1955-05-31
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Expires: 1969-10-19
Abstract
No abstract record available.
Inventors
- 👤 Lyman R Spaulding
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 07:13
CPC Classifications
G; G01; G01R; G01R31/00; G01R31/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2361437A
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US2345932A
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US2408824A
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US2477023A
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US2472784A
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US2405071A
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US2499759A
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US2602834A
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US2651752A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-05-30 | 1958-11-29 | 1959-05-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-05-30 | 1962-11-29 | 1963-05-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-05-30 | 1966-11-29 | 1967-05-31 | $7700.00 | Window Closed / Lapsed |