US2454062A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High-frequency conductor having a low impedance movable electrical contact device
Assignee: EMI Ltd
•
Filing: 1943-10-02
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Granted: 1948-11-16
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Expires: 1963-10-02
Abstract
No abstract record available.
Inventors
- 👤 Holman Herbert Edward
- 👤 Cork Edward Cecil
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 09:21
CPC Classifications
H; H01; H01P; H01P1/00; H01P1/24; H01P1/28
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-11-16 | 1952-05-17 | 1952-11-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-11-16 | 1956-05-17 | 1956-11-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-11-16 | 1960-05-17 | 1960-11-16 | $7700.00 | Window Closed / Lapsed |