US3461394A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multistage wide-band transistor amplifier
Assignee: Siemens AG
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Filing: 1965-07-26
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Granted: 1969-08-12
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Expires: 1985-07-26
Abstract
No abstract record available.
Inventors
- 👤 Wolfgang Ulmer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:32
CPC Classifications
H; H03; H03G; H03G1/00; H03G1/0005; H03F; H03F1/00; H03F1/08; H03F1/12; H03F1/42; H03F1/48; H03F3/00; H03F3/189; H03F3/19; H03F3/191; H03G3/00; H03G3/20; H03G3/30; H03G3/3036; H03G5/00; H03G5/16; H03G5/24; H03G5/28
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) | 1972-08-11 | 1973-02-10 | 1973-08-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-08-11 | 1977-02-10 | 1977-08-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-08-11 | 1981-02-10 | 1981-08-12 | $7700.00 | Window Closed / Lapsed |