Patent US577681A successfully refreshed from Google Patents.
Patent US3333201A successfully refreshed from Google Patents.
US3333201A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tuning indicator circuit
Assignee: Lanteris Space LLC
•
Filing: 1964-01-24
•
Granted: 1967-07-25
•
Expires: 1984-01-24
Abstract
No abstract record available.
Inventors
- 👤 Hopengarten Abram
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:27
CPC Classifications
H; H03; H03J; H03J3/00; H03J3/02; H03J3/12; H03J3/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
143 words
A SYSTEM FOR PROVIDING A PRECISE INDICATION WHEN THE FREQUENCY OF AN INPUT SIGNAL ATTAINS A FIRST VALUE, COMPRISING: (A) FIRST MEANS, RESPONSIVE TO SAID SIGNAL, FOR PROVIDING A FIRST CONTINUOUS OUTPUT SIGNAL HAVING A FIRST VOLTAGE PEAK WHEN THE FREQUENCY OF SAID INPUT SIGNAL ATTAINS A SECOND VALUE LOWER THAN SAID FIRST VALUE AND A SECOND VOLTAGE PEAK WHEN THE FREQUENCY OF SAID INPUT SIGNAL ATTAINS A THIRD VALUE HIGHER THAN SAID FIRST VALUE, (B) SECOND MEANS, RESPONSIVE TO SAID INPUT SIGNAL, FOR PROVIDING A SECOND OUTPUT SIGNAL HAVING A SUBSTANTIALLY CONSTANT VOLTAGE WHEN THE FREQUENCY OF SAID INPUT SIGNAL IS APPROXIMATELY BETWEEN SAID SECOND AND THIRD VALUES, (C) THIRD MEANS FOR SUBTRACTING SAID FIRST OUTPUT SIGNAL FROM SAID SECOND OUTPUT SIGNAL TO PRODUCE A RESULTANT SIGNAL, AND (D) FOURTH MEANS FOR PROVIDING AN INDICATION OF THE MAGNITUDE OF SAID RESULTANT SIGNAL.
Claim 2
Independent Claim
143 words
A SYSTEM FOR PROVIDING A PRECISE INDICATION WHEN THE FREQUENCY OF AN INPUT SIGNAL ATTAINS A FIRST VALUE, COMPRISING: (A) FIRST MEANS, RESPONSIVE TO SAID SIGNAL, FOR PROVIDING A FIRST CONTINUOUS OUTPUT SIGNAL HAVING A FIRST VOLTAGE PEAK WHEN THE FREQUENCY OF SAID INPUT SIGNAL ATTAINS A SECOND VALUE LOWER THAN SAID FIRST VALUE AND A SECOND VOLTAGE PEAK WHEN THE FREQUENCY OF SAID INPUT SIGNAL ATTAINS A THIRD VALUE HIGHER THAN SAID FIRST VALUE, (B) SECOND MEANS, RESPONSIVE TO SAID INPUT SIGNAL, FOR PROVIDING A SECOND OUTPUT SIGNAL HAVING A SUBSTANTIALLY CONSTANT VOLTAGE WHEN THE FREQUENCY OF SAID INPUT SIGNAL IS APPROXIMATELY BETWEEN SAID SECOND AND THIRD VALUES, (C) THIRD MEANS FOR SUBTRACTING SAID FIRST OUTPUT SIGNAL FROM SAID SECOND OUTPUT SIGNAL TO PRODUCE A RESULTANT SIGNAL, AND (D) FOURTH MEANS FOR PROVIDING AN INDICATION OF THE MAGNITUDE OF SAID RESULTANT SIGNAL.
References Cited (Backward Citations)
US2286413A
Cited
US3038123A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-07-24 | 1971-01-23 | 1971-07-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-07-24 | 1975-01-23 | 1975-07-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-07-24 | 1979-01-23 | 1979-07-25 | $7700.00 | Window Closed / Lapsed |