US3064141A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Transistor amplifier circuits for square waves, with level setting and noise elimination
Assignee: International Business Machines Corp
•
Filing: 1957-12-30
•
Granted: 1962-11-13
•
Expires: 1977-12-30
Abstract
No abstract record available.
Inventors
- 👤 Wayne W Chou
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 12:10
CPC Classifications
H; H03; H03K; H03K5/00; H03K5/01; H03K5/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2712065A
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US2683806A
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US2724061A
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US2828417A
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US2892101A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-11-12 | 1966-05-14 | 1966-11-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-11-12 | 1970-05-14 | 1970-11-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-11-12 | 1974-05-14 | 1974-11-13 | $7700.00 | Window Closed / Lapsed |