US3237188A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Variable capacitor analog to digital conversion
Assignee: RCA Corp
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Filing: 1962-05-09
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Granted: 1966-02-22
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Expires: 1982-05-09
Abstract
No abstract record available.
Inventors
- 👤 Irwin S Shair
- 👤 Robert H Colbourne
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 09:30
CPC Classifications
H; H03; H03M; H03M1/00; H03M1/06; H03M1/08
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
109 words
A CIRCUIT FOR PRODUCING A DIGITAL MEASURE OF A MAGNITUDE OF A CONDITION, COMPRISING A PAIR OF MONOSTABLE MULTIVIBRATORS EACH INCLUDING FIRST AND SECOND GROUNDED-EMITTER TRANSISTORS AND EACH INCLUDING A RESISTOR-CAPACITOR TIME CONSTANT CIRCUIT BETWEEN THE COLLECTOR OF SAID SECOND TRANSISTOR AND THE BASE OF SAID FIRST TRANSISTOR, ONE OF SAID CAPACITORS BEING VARIABLE IN RESPONSE TO THE MAGNITUDE OF A CONDITION TO BE MEASURED, MEANS TO APPLY AN INPUT TRIGGER PULSE SIMULTANEOUSLY TO THE BASES OF SAID FIRST TRANSISTORS OF BOTH OF THE MULTIVIBRATORS OF SAID PAIR, AN "EXCLUSIVE OR" GATE HAVING INPUTS COUPLED TO RECEIVE OUTPUT PULSES FROM THE COLLECTORS OF SAID SECOND TRANSISTORS OF BOTH MULTIVIBRATORS,
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) | 1969-02-21 | 1969-08-23 | 1970-02-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-21 | 1973-08-23 | 1974-02-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-21 | 1977-08-23 | 1978-02-22 | $7700.00 | Window Closed / Lapsed |