US3246176A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetic flow meter circuit utilizing field effect transistors
Assignee: Schneider Electric Systems USA Inc
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Filing: 1965-03-08
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Granted: 1966-04-12
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Expires: 1985-03-08
Abstract
No abstract record available.
Inventors
- 👤 Jr Alfred Nazareth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:14
CPC Classifications
G; G01; G01F; G01F1/00; G01F1/56; G01F1/58; G01F1/60; Y; Y10; Y10S; Y10S73/00; Y10S73/05
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
117 words
SIGNAL-RESPONSIVE APPARATUS COMPRISING AN AMPLIFIER ADAPTED TO RECEIVE AN INPUT SIGNAL; A VARIABLE ATTENUATION NETWORK HAVING AN INPUT AND AN OUTPUT AND INCLUDING AT LEAST ONE VARIABLE IMPEDANCE ELEMENT THE IMPEDANCE OF WHICH CONTROLS THE ATTENUATION PRESENTED BY SAID NETWORK, SAID VARIABLE IMPEDANCE ELEMENT HAVING A CONTROL TERMINAL INDEPENDENT OF SAID INPUT AND OUTPUT OF SAID NETWORK; FIRST CIRCUIT MEANS FOR DIRECTING TO SAID CONTROL TERMINAL A SIGNAL RESPONSIVE TO THE OUTPUT OF SAID AMPLIFIER FOR CONTROLLING THE IMPEDANCE OF SAID VARIABLE IMPEDANCE ELEMENT AND THEREBY CONTROLLING THE AMOUNT OF ATTENUATION PRESENTED BY SAID NETWORK; A.-C. AND D.-C. ENERGIZING MEANS COUPLED TO THE INPUT OF SAID ATTENUATION NETWORK TO PRODUCE AT THE OUTPUT OF SAID NETWORK CORRESPONDING
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) | 1969-04-11 | 1969-10-11 | 1970-04-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-11 | 1973-10-11 | 1974-04-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-11 | 1977-10-11 | 1978-04-12 | $7700.00 | Window Closed / Lapsed |