US2870268A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Transistor controlled low level magnetic amplifier
Assignee: GEORGE A RUBISSOW
•
Filing: 1953-10-12
•
Granted: 1959-01-20
•
Expires: 1973-10-12
Abstract
No abstract record available.
Inventors
- 👤 Mamon Michel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 13:34
CPC Classifications
H; H03; H03F; H03F9/00; H03F9/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1544381A
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US1696860A
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US2524035A
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US2686290A
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GB684626A
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US2636150A
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US2653282A
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US2751545A
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US2759142A
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US2695993A
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US2710928A
Cited
US2798904A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-01-19 | 1962-07-21 | 1963-01-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-01-19 | 1966-07-21 | 1967-01-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-01-19 | 1970-07-21 | 1971-01-20 | $7700.00 | Window Closed / Lapsed |