US2728058A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Means for securing and attachment plug to an electrical receptacle
Assignee: Individual
•
Filing: 1952-06-25
•
Granted: 1955-12-20
•
Expires: 1972-06-25
Abstract
No abstract record available.
Inventors
- 👤 Lawrence R Phalen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:38
CPC Classifications
H; H01; H01R; H01R13/00; H01R13/62; H01R13/639; H01R13/6395
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US496696A
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US825753A
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FR647389A
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US1874334A
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US1989823A
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GB507440A
Cited
US2378105A
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GB578789A
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US2449646A
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US2515257A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-12-19 | 1959-06-20 | 1959-12-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-12-19 | 1963-06-20 | 1963-12-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-12-19 | 1967-06-20 | 1967-12-20 | $7700.00 | Window Closed / Lapsed |