Patent US2591437A successfully refreshed from Google Patents.
US2591437A
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Coupling device for electric cables
Assignee: Individual
•
Filing: 1947-02-27
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Granted: 1952-04-01
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Expires: 1967-02-27
Abstract
No abstract record available.
Inventors
- 👤 Jun Erik Haugsrud
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:37
CPC Classifications
H; H01; H01R; H01R13/00; H01R13/02; H01R13/20; H01R13/28; Y; Y10; Y10T; Y10T403/00; Y10T403/66
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1620693A
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US1965151A
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US2093037A
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US2082986A
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US2346831A
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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) | 1955-04-01 | 1955-10-01 | 1956-04-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-04-01 | 1959-10-01 | 1960-04-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-04-01 | 1963-10-01 | 1964-04-01 | $7700.00 | Window Closed / Lapsed |