Patent US3249898A successfully refreshed from Google Patents.
US3249898A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Adjustable modulator apparatus
Assignee: Individual
•
Filing: 1962-02-13
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Granted: 1966-05-03
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Expires: 1982-02-13
Abstract
No abstract record available.
Inventors
- 👤 Caldwell P Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 20:23
CPC Classifications
G; G10; G10L; G10L25/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
96 words
IN AN INTELLIGENCE IDENTIFYING SYSTEM, A MODULATOR APPARATUS COMPRISING A SOURCE OF A.-C. SIGNALS OF SMALL MAGNITUDE, A D.-C. CONTROL CURRENT SOURCE, MEANS INCLUDING A DIODE, A RESISTOR, AND A CAPACITOR CONNECTED IN SERIES RELATION TO SAID A.-C. SIGNAL SOURCE, SAID D.-C. CONTROL CURRENT SOURCE BEING CONNECTED IN SERIES WITH SAID DIODE TO PROVIDE BIAS VOLTAGE CONTROLLING THE DEGREE OF SIGNAL MODULATION, A SECOND RESISTOR CONNECTED TO SAID D.-C. SIGNAL SOURCE, AND A.-C. OUTPUT TERMINALS CONNECTED ACROSS SAID DIODE, THE OUTPUT ACROSS SAID A.-C. OUTPUT TERMINALS BEING INDEPENDENT OF THE POLARITY OF SAID D.-C. CONTROL CURRENT
Claim 2
Dependent Claim
96 words
IN AN INTELLIGENCE IDENTIFYING SYSTEM, A MODULATOR APPARATUS COMPRISING A SOURCE OF A.-C. SIGNALS OF SMALL MAGNITUDE, A D.-C. CONTROL CURRENT SOURCE, MEANS INCLUDING A DIODE, A RESISTOR, AND A CAPACITOR CONNECTED IN SERIES RELATION TO SAID A.-C. SIGNAL SOURCE, SAID D.-C. CONTROL CURRENT SOURCE BEING CONNECTED IN SERIES WITH SAID DIODE TO PROVIDE BIAS VOLTAGE CONTROLLING THE DEGREE OF SIGNAL MODULATION, A SECOND RESISTOR CONNECTED TO SAID D.-C. SIGNAL SOURCE, AND A.-C. OUTPUT TERMINALS CONNECTED ACROSS SAID DIODE, THE OUTPUT ACROSS SAID A.-C. OUTPUT TERMINALS BEING INDEPENDENT OF THE POLARITY OF SAID D.-C. CONTROL CURRENT
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-05-02 | 1969-11-01 | 1970-05-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-05-02 | 1973-11-01 | 1974-05-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-05-02 | 1977-11-01 | 1978-05-03 | $7700.00 | Window Closed / Lapsed |