US3008091A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Direct coupled cascaded complimentary transistor amplifier
Assignee: US Philips Corp
•
Filing: 1953-09-02
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Granted: 1961-11-07
•
Expires: 1973-09-02
Abstract
No abstract record available.
Inventors
- 👤 Adrianus Johannes Wilhel Marie
- 👤 Stieltjes Frederik Hendrik
- 👤 Jochems Pieter Johan Wilhelmus
- 👤 Ensink Johannes
- 👤 Verhagen Jan
- 👤 Tummers Leonard Johan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:16
CPC Classifications
H; H03; H03F; H03F3/00; H03F3/189; H03F3/19; H03F1/00; H03F1/34; H03F1/347; H03F3/34; H03F3/343; H03F3/3432; H03F3/3435; H03F3/3437
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB665867A
Cited
US2666817A
Cited
US2666818A
Cited
US2730576A
Cited
US2666819A
Cited
US2794076A
Cited
US2655609A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-11-06 | 1965-05-08 | 1965-11-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-11-06 | 1969-05-08 | 1969-11-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-11-06 | 1973-05-08 | 1973-11-07 | $7700.00 | Window Closed / Lapsed |