US3070727A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Transistor circuit for applying sawtooth currents to an inductance
Assignee: US Philips Corp
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Filing: 1959-04-06
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Granted: 1962-12-25
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Expires: 1979-04-06
Abstract
No abstract record available.
Inventors
- 👤 Birt David Robin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 19:24
CPC Classifications
H; H03; H03K; H03K4/00; H03K4/06; H03K4/08; H03K4/48; H03K4/60; H03K4/69; H03K4/696; A; A45; A45C; A45C7/00; A45C7/0018; A45C7/0036; H03K4/693; H03K4/72
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2864961A
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US2891173A
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US2837740A
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US2926284A
Cited
US2896114A
Cited
US2933642A
Cited
US2958003A
Cited
US2964673A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-12-24 | 1966-06-25 | 1966-12-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-12-24 | 1970-06-25 | 1970-12-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-12-24 | 1974-06-25 | 1974-12-25 | $7700.00 | Window Closed / Lapsed |