US2885495A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Emitter coupled transistor amplifier
Assignee: RCA Corp
•
Filing: 1954-03-24
•
Granted: 1959-05-05
•
Expires: 1974-03-24
Abstract
No abstract record available.
Inventors
- 👤 George C Sziklai
- 👤 Robert D Lohman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 01:08
CPC Classifications
H; H03; H03F; H03F3/00; H03F3/189; H03F3/19
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1765293A
Cited
US1967249A
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US2275023A
Cited
US2324279A
Cited
US2595496A
Cited
GB665867A
Cited
US2666818A
Cited
US2730576A
Cited
US2666819A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-05-04 | 1962-11-03 | 1963-05-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-05-04 | 1966-11-03 | 1967-05-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-05-04 | 1970-11-03 | 1971-05-05 | $7700.00 | Window Closed / Lapsed |