US3234404A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Broad-band many-decade logarithmic amplifier
Assignee: Hazeltine Research Inc
•
Filing: 1962-12-19
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Granted: 1966-02-08
•
Expires: 1982-12-19
Abstract
No abstract record available.
Inventors
- 👤 David L Peters
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:25
CPC Classifications
G; G06; G06G; G06G7/00; G06G7/12; G06G7/24
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
75 words
A BROAD-BAND MANY-DECADE LOGARITHMIC AMPLIFIER COMPRISING: MEANS FOR SUPPLYING INPUT SIGNALS; FIRST CIRCUIT MEANS, INCLUDING A FIRST LOGARITHMIC AMPLIFIER HAVING A CHARACTERISTIC WHICH IS LOGARITHMIC ONLY OVER A RELATIVELY NARROW FREQUENCY RANGE FOR INPUT SIGNALS BELOW A PARTICULAR LEVEL, RESPONSIVE TO SAID INPUT SIGNALS FOR LOGARITHMICALLY AMPLIFYING INPUT SIGNALS ABOVE SAID PARTICULAR LEVEL; SECOND CIRCUIT MEANS INCLUDIND A SECOND LOGARITHMIC AMPLIFIER, RESPONSIVE TO SAID INPUT SIGNALS FOR LOGARITHMICALLY AMPLIFYING INPUT SIGNALS BELOW SAID PARTICULAR LEVEL;
Claim 2
Dependent Claim
75 words
A BROAD-BAND MANY-DECADE LOGARITHMIC AMPLIFIER COMPRISING: MEANS FOR SUPPLYING INPUT SIGNALS; FIRST CIRCUIT MEANS, INCLUDING A FIRST LOGARITHMIC AMPLIFIER HAVING A CHARACTERISTIC WHICH IS LOGARITHMIC ONLY OVER A RELATIVELY NARROW FREQUENCY RANGE FOR INPUT SIGNALS BELOW A PARTICULAR LEVEL, RESPONSIVE TO SAID INPUT SIGNALS FOR LOGARITHMICALLY AMPLIFYING INPUT SIGNALS ABOVE SAID PARTICULAR LEVEL; SECOND CIRCUIT MEANS INCLUDIND A SECOND LOGARITHMIC AMPLIFIER, RESPONSIVE TO SAID INPUT SIGNALS FOR LOGARITHMICALLY AMPLIFYING INPUT SIGNALS BELOW SAID PARTICULAR LEVEL;
References Cited (Backward Citations)
US3109103A
Cited
US3108224A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-02-07 | 1969-08-09 | 1970-02-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-07 | 1973-08-09 | 1974-02-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-07 | 1977-08-09 | 1978-02-08 | $7700.00 | Window Closed / Lapsed |