US2564246A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electromagnetic reversing switch
Assignee: Lucas Support Services Ltd
•
Filing: 1948-12-20
•
Granted: 1951-08-14
•
Expires: 1968-12-20
Abstract
No abstract record available.
Inventors
- 👤 Bourne William George
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 01:03
CPC Classifications
H; H01; H01H; H01H51/00; H01H51/02; H01H51/04; H01H51/12; H01H50/00; H01H50/02; H01H50/04; H01H2050/049; H01H51/005
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1019484A
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US1422523A
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US1562646A
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US1991037A
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US2082493A
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US2315920A
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US2448772A
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US2436224A
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US2431025A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-08-13 | 1955-02-12 | 1955-08-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-08-13 | 1959-02-12 | 1959-08-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-08-13 | 1963-02-12 | 1963-08-14 | $7700.00 | Window Closed / Lapsed |