Patent US2725474A successfully refreshed from Google Patents.
US2725474A
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Oscillation circuit with superconductor
Assignee: Telefonaktiebolaget LM Ericsson AB
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Filing: 1950-08-04
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Granted: 1955-11-29
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Expires: 1970-08-04
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
2026-10-22 20:10
CPC Classifications
H; H03; H03F; H03F19/00; G; G05; G05B; G05B1/00; G05B1/01; G05B1/02; G05B1/025; G11; G11C; G11C11/00; G11C11/21; G11C11/44; H01; H01B; H01B1/00; H01C; H01C7/00; H01C7/04; H02; H02M; H02M11/00; H03B; H03B15/00; H03F15/00; H10; H10N; H10N60/00; H10N60/80; H10N60/85; Y; Y10; Y10S; Y10S336/00; Y10S336/01; Y10S505/00; Y10S505/825; Y10S505/853; Y10S505/854; Y10S505/88
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) | 1958-11-28 | 1959-05-30 | 1959-11-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-11-28 | 1963-05-30 | 1963-11-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-11-28 | 1967-05-30 | 1967-11-29 | $7700.00 | Window Closed / Lapsed |