US3328678A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multi-section attenuating networks
Assignee: Marconi Instruments Ltd
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Filing: 1965-03-01
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Granted: 1967-06-27
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Expires: 1985-03-01
Abstract
No abstract record available.
Inventors
- 👤 Middleton John David
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 03:19
CPC Classifications
H; H03; H03H; H03H7/00; H03H7/24; H01; H01G; H01G4/00; H01G4/38
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
63 words
AN ATTENUATING NETWORK COMPRISING AT LEAST TWO SECTIONS IN CASCADE EACH INCLUDING A SERIES RESISTANCE, A CONDENSER IN PARALLEL WITH SAID RESISTANCE AND TWO SHUNT CONDENSERS ONE ON EACH SIDE OF SAID RESISTANCE, AND A SHUNT RESISTANCE ACROSS THE OUTPUT END OF THE LAST OF THE SECTIONS, THE ELEMENTS IN THE NETWORK BEING DIMENSIONED SO AS SUBSTANTIALLY TO SATISFY THE FOLLOWING EQUATIONS NAMELY:
Claim 2
Dependent Claim
63 words
AN ATTENUATING NETWORK COMPRISING AT LEAST TWO SECTIONS IN CASCADE EACH INCLUDING A SERIES RESISTANCE, A CONDENSER IN PARALLEL WITH SAID RESISTANCE AND TWO SHUNT CONDENSERS ONE ON EACH SIDE OF SAID RESISTANCE, AND A SHUNT RESISTANCE ACROSS THE OUTPUT END OF THE LAST OF THE SECTIONS, THE ELEMENTS IN THE NETWORK BEING DIMENSIONED SO AS SUBSTANTIALLY TO SATISFY THE FOLLOWING EQUATIONS NAMELY:
References Cited (Backward Citations)
GB570966A
Cited
US3267355A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-06-26 | 1970-12-26 | 1971-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-06-26 | 1974-12-26 | 1975-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-06-26 | 1978-12-26 | 1979-06-27 | $7700.00 | Window Closed / Lapsed |