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US2744968A
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US
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Assignee: North Electric Co
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Filing: 1951-05-15
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Granted: 1956-05-08
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Expires: 1971-05-15
Abstract
No abstract record available.
Inventors
- 👤 James M Blackhall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 15:22
CPC Classifications
H; H01; H01R; H01R13/00; H01R13/66; H01R13/70; H01R13/703
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1714611A
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US1809025A
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US1917009A
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US2237666A
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US2289172A
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US2500292A
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US2459237A
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US2561426A
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US2512908A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-05-08 | 1959-11-07 | 1960-05-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-05-08 | 1963-11-07 | 1964-05-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-05-08 | 1967-11-07 | 1968-05-08 | $7700.00 | Window Closed / Lapsed |