Patent US3244978A successfully refreshed from Google Patents.
US3244978A
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US
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Apparatus for the determination of attenuation in waveguides including means for comparing the amplitudes of pulse reflections
Assignee: International Standard Electric Corp
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Filing: 1962-07-16
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Granted: 1966-04-05
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Expires: 1982-07-16
Abstract
No abstract record available.
Inventors
- 👤 Craven George Frederick
- 👤 Karbowiak Antoni Emil
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 17:55
CPC Classifications
G; G01; G01R; G01R27/00; G01R27/02; G01R27/04; G01R27/06; G01R27/28
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
92 words
APPARATUS FOR THE DETERMINATION OF ATTENUATION IN WAVEGUIDES INCLUDING MEANS FOR APPLYING TO THE WAVEGUIDE A SERIES OF SIGNAL PULSES OF SUCCESSIVELY DIFFERENT FREQUENCIES, MEANS FOR AUTOMATICALLY COMPARING THE RELATIVE AMPLITUDE OF SUCCESSIVE PULSE REFLECTIONS AT EACH SIGNAL FREQUENCY, SAID COMPARING MEANS INCLUDING MEANS FOR SEPARATING ANY TWO PULSE REFLECTIONS OF EACH SIGNAL PULSE INTO INDIVIDUAL CHANNELS AND MEANS FOR CONVERTING THE PULSE REFLECTIONS IN EACH CHANNEL INTO RELATIVE VOLTAGE VALUES AT A COMMON FREQUENCY FOR COMPARISON BY A RATIO METER, AND MEANS FOR PERMANENTLY RECORDING THE RATIO OF THE RELATIVE AMPLITUDES.
Claim 2
Dependent Claim
92 words
APPARATUS FOR THE DETERMINATION OF ATTENUATION IN WAVEGUIDES INCLUDING MEANS FOR APPLYING TO THE WAVEGUIDE A SERIES OF SIGNAL PULSES OF SUCCESSIVELY DIFFERENT FREQUENCIES, MEANS FOR AUTOMATICALLY COMPARING THE RELATIVE AMPLITUDE OF SUCCESSIVE PULSE REFLECTIONS AT EACH SIGNAL FREQUENCY, SAID COMPARING MEANS INCLUDING MEANS FOR SEPARATING ANY TWO PULSE REFLECTIONS OF EACH SIGNAL PULSE INTO INDIVIDUAL CHANNELS AND MEANS FOR CONVERTING THE PULSE REFLECTIONS IN EACH CHANNEL INTO RELATIVE VOLTAGE VALUES AT A COMMON FREQUENCY FOR COMPARISON BY A RATIO METER, AND MEANS FOR PERMANENTLY RECORDING THE RATIO OF THE RELATIVE AMPLITUDES.
References Cited (Backward Citations)
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Cited
US2649570A
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US2931900A
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US2925556A
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US3107329A
Cited
US3114875A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-04-04 | 1969-10-04 | 1970-04-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-04 | 1973-10-04 | 1974-04-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-04 | 1977-10-04 | 1978-04-05 | $7700.00 | Window Closed / Lapsed |