US3258705A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Extreme low noise transistor amplifiers
Assignee: —
•
Filing: —
•
Granted: 1966-06-28
•
Expires: 1983-06-28
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 15:06
CPC Classifications
H; H03; H03F; H03F1/00; H03F1/26; H03F2200/00; H03F2200/372
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
69 words
A LOW NOISE TRANSISTOR AMPLIFIER SYSTEM COMPRISING IN COMBINATION A NON-AMPLIYING SIGNAL SOURCE AND AT LEAST ONE TRANSISTOR AMPLIFIER STAGE HAVING AN INPUT AND AN OUTPUT AND FIRST STAGE ELEMENTS AND MEANS CONNECTING THE SIGNAL SOURCE TO THE BASE OF THE FIRST TRANSISTOR AND A FEEDBACK PATH FROM THE OUTPUT TO THE INPUT OF SAID FIRST STAGE OF THE AMPLIFER, THE OPTIMUM SIGNAL SOURCE RESISTANCE BEING DEFINED AS FOLLOWS:
Claim 2
Dependent Claim
69 words
A LOW NOISE TRANSISTOR AMPLIFIER SYSTEM COMPRISING IN COMBINATION A NON-AMPLIYING SIGNAL SOURCE AND AT LEAST ONE TRANSISTOR AMPLIFIER STAGE HAVING AN INPUT AND AN OUTPUT AND FIRST STAGE ELEMENTS AND MEANS CONNECTING THE SIGNAL SOURCE TO THE BASE OF THE FIRST TRANSISTOR AND A FEEDBACK PATH FROM THE OUTPUT TO THE INPUT OF SAID FIRST STAGE OF THE AMPLIFER, THE OPTIMUM SIGNAL SOURCE RESISTANCE BEING DEFINED AS FOLLOWS:
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) | 1969-06-27 | 1969-12-27 | 1970-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-06-27 | 1973-12-27 | 1974-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-06-27 | 1977-12-27 | 1978-06-28 | $7700.00 | Window Closed / Lapsed |