Patent US3391307A successfully refreshed from Google Patents.
US3391307A
Expired / Lapsed
US
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Capacitor fed electromagnetic winding arrangment
Assignee: Framo Morat GmbH and Co KG
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Filing: 1967-01-13
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Granted: 1968-07-02
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Expires: 1987-01-13
Abstract
No abstract record available.
Inventors
- 👤 Stock Hans-Joachim
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 18:37
CPC Classifications
H; H01; H01F; H01F7/00; H01F7/06; H01F7/08; H01F7/18; H01F7/1805; D; D04; D04B; D04B15/00; D04B15/66; D04B15/68; D04B15/78; H01F7/1816; H03; H03K; H03K3/00; H03K3/02; H03K3/53
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) | 1971-07-02 | 1972-01-01 | 1972-07-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-07-02 | 1976-01-01 | 1976-07-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-07-02 | 1980-01-01 | 1980-07-02 | $7700.00 | Window Closed / Lapsed |