Patent US3015772A successfully refreshed from Google Patents.
US3015772A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Series connected d. c. supply magnetic amplifier
Assignee: Individual
•
Filing: 1959-06-02
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Granted: 1962-01-02
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Expires: 1979-06-02
Abstract
No abstract record available.
Inventors
- 👤 Robert W Rochelle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 10:25
CPC Classifications
H; H03; H03F; H03F9/00; H03F9/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2831929A
Cited
US2794165A
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US2854850A
Cited
US2777073A
Cited
GB769186A
Cited
US2826731A
Cited
US2848614A
Cited
US2964716A
Cited
US2897433A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-01-01 | 1965-07-03 | 1966-01-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-01-01 | 1969-07-03 | 1970-01-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-01-01 | 1973-07-03 | 1974-01-02 | $7700.00 | Window Closed / Lapsed |