Patent US2771590A successfully refreshed from Google Patents.
US2771590A
Expired / Lapsed
US
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Interlocking electrical plug assembly
Assignee: Individual
•
Filing: 1953-05-15
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Granted: 1956-11-20
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Expires: 1973-05-15
Abstract
No abstract record available.
Inventors
- 👤 Benjamin F Nauslar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 18:43
CPC Classifications
H; H01; H01R; H01R13/00; H01R13/02; H01R13/20
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1376168A
Cited
US1753064A
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US2026755A
Cited
US2149550A
Cited
US2220810A
Cited
US2643364A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-11-20 | 1960-05-21 | 1960-11-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-11-20 | 1964-05-21 | 1964-11-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-11-20 | 1968-05-21 | 1968-11-20 | $7700.00 | Window Closed / Lapsed |