US2770786A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Double safety electrical receptacle
Assignee: Individual
•
Filing: 1952-10-11
•
Granted: 1956-11-13
•
Expires: 1972-10-11
Abstract
No abstract record available.
Inventors
- 👤 Chelton Mac Victor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:54
CPC Classifications
H; H01; H01R; H01R13/00; H01R13/44; H01R13/447; H01R13/453; H01R13/4534
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB508248A
Cited
GB508415A
Cited
US2155925A
Cited
CH239441A
Cited
US2477803A
Cited
US2579538A
Cited
US2545536A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-11-13 | 1960-05-14 | 1960-11-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-11-13 | 1964-05-14 | 1964-11-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-11-13 | 1968-05-14 | 1968-11-13 | $7700.00 | Window Closed / Lapsed |