Patent US3139587A successfully refreshed from Google Patents.
US3139587A
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Amplitude limiting circuit
Assignee: RTX Corp
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Filing: 1960-10-17
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Granted: 1964-06-30
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Expires: 1980-10-17
Abstract
No abstract record available.
Inventors
- 👤 William C Peck
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 21:29
CPC Classifications
H; H03; H03G; H03G11/00; H03G11/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
63 words
A CONTROL CIRCUIT FOR PASSING SIGNALS ONLY WHEN THE SIGNALS ARE BELOW A PRESELECTED MAGNITUDE COMPRISING MEANS TO SUPPLY AN INPUT SIGNAL OF VARYING AMPLITUDE, AN OUTPUT CIRCUIT, A FIRST CIRCUIT PATH INCLUDING A PAIR OF BACK-TO-BACK SERIES DIODES FOR CONDUCTING SAID INPUT SIGNAL TO SAID OUTPUT CIRCUIT, MEANS FOR SUPPLYING A BIASING SIGNAL TO THE JUNCTION BETWEEN SAID DIODES TO RENDER SAID
Claim 2
Dependent Claim
63 words
A CONTROL CIRCUIT FOR PASSING SIGNALS ONLY WHEN THE SIGNALS ARE BELOW A PRESELECTED MAGNITUDE COMPRISING MEANS TO SUPPLY AN INPUT SIGNAL OF VARYING AMPLITUDE, AN OUTPUT CIRCUIT, A FIRST CIRCUIT PATH INCLUDING A PAIR OF BACK-TO-BACK SERIES DIODES FOR CONDUCTING SAID INPUT SIGNAL TO SAID OUTPUT CIRCUIT, MEANS FOR SUPPLYING A BIASING SIGNAL TO THE JUNCTION BETWEEN SAID DIODES TO RENDER SAID
References Cited (Backward Citations)
US2098370A
Cited
US2519890A
Cited
US2493045A
Cited
US2657318A
Cited
US2782303A
Cited
US2858433A
Cited
US3069562A
Cited
US2982867A
Cited
US2985836A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-06-30 | 1967-12-30 | 1968-06-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-06-30 | 1971-12-30 | 1972-06-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-06-30 | 1975-12-30 | 1976-06-30 | $7700.00 | Window Closed / Lapsed |