US2659868A
Expired / Lapsed
US
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Modulation by magnetic control of superconductors
Assignee: Telefonaktiebolaget LM Ericsson AB
•
Filing: 1949-06-20
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Granted: 1953-11-17
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Expires: 1969-06-20
Abstract
No abstract record available.
Inventors
- 👤 Ericsson Eric Arvid
- 👤 Jorgensen Anders Ossian
- 👤 Overby Sune Lambert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 20:22
CPC Classifications
H; H03; H03K; H03K7/00; H03C; H03C1/00; H03C1/08; H03C1/10; H03C5/00; H03C5/02; H03C5/04; Y; Y10; Y10S; Y10S505/00; Y10S505/825; Y10S505/828
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1609748A
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US2043448A
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US2382615A
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US2418842A
Cited
FR903364A
Cited
US2407293A
Cited
US2483818A
Cited
US2549775A
Cited
US2629079A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-11-16 | 1957-05-18 | 1957-11-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-11-16 | 1961-05-18 | 1961-11-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-11-16 | 1965-05-18 | 1965-11-17 | $7700.00 | Window Closed / Lapsed |