US2804601A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coupling devices for electric cables
Assignee: Balfour Beatty PLC
•
Filing: 1954-06-08
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Granted: 1957-08-27
•
Expires: 1974-06-08
Abstract
No abstract record available.
Inventors
- 👤 Harthman Francis Peter
- 👤 Harwood Frederick Arthur
- 👤 Balmforth John Chalmer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 09:59
CPC Classifications
H; H01; H01R; H01R13/00; H01R13/62; H01R13/621; H01R13/58; H01R13/595
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
CA495258A
Cited
GB103499A
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GB532701A
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US2511037A
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US2498589A
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US2521822A
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US2590160A
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US2662219A
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US2605315A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-08-26 | 1961-02-25 | 1961-08-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-08-26 | 1965-02-25 | 1965-08-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-08-26 | 1969-02-25 | 1969-08-27 | $7700.00 | Window Closed / Lapsed |