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Patent US3461374A successfully refreshed from Google Patents.
US3461374A
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Converter circuit for regulating voltage by regulation of frequency
Assignee: Fiskars Electronics Corp
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Filing: 1965-11-26
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Granted: 1969-08-12
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Expires: 1985-11-26
Abstract
No abstract record available.
Inventors
- 👤 Earl C Rhyne Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 06:31
CPC Classifications
G; G05; G05F; G05F1/00; G05F1/10; G05F1/12; G05F1/40; G05F1/44; H; H02; H02M; H02M7/00; H02M7/42; H02M7/44; H02M7/48; H02M7/505; H02M7/515; H02M7/525
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3061769A
Cited
US3109133A
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US3197691A
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US3327199A
Cited
US3320510A
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US3325716A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-08-11 | 1973-02-10 | 1973-08-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-08-11 | 1977-02-10 | 1977-08-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-08-11 | 1981-02-10 | 1981-08-12 | $7700.00 | Window Closed / Lapsed |