Patent US3678933A successfully refreshed from Google Patents.
US2765450A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multiple electrical sockets
Assignee: Individual
•
Filing: 1952-10-20
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Granted: 1956-10-02
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Expires: 1972-10-20
Abstract
No abstract record available.
Inventors
- 👤 Richardson Sidney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 00:00
CPC Classifications
H; H01; H01R; H01R12/00; H01R12/70; H01R12/71; H01R12/72; H01R12/721
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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GB357171A
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US2129725A
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US2098747A
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US2227967A
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US2263630A
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US2369630A
Cited
US2377187A
Cited
US2428057A
Cited
US2549725A
Cited
GB662687A
Cited
US2664552A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-10-02 | 1960-04-02 | 1960-10-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-10-02 | 1964-04-02 | 1964-10-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-10-02 | 1968-04-02 | 1968-10-02 | $7700.00 | Window Closed / Lapsed |