US3240956A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Clamping circuit
Assignee: AB Dick Co
•
Filing: 1962-12-10
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Granted: 1966-03-15
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Expires: 1982-12-10
Abstract
No abstract record available.
Inventors
- 👤 Joseph J Stone
- 👤 Thomas J Pavlik
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:22
CPC Classifications
H; H03; H03K; H03K5/00; H03K5/01; H03K5/08
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
151 words
A CLAMPING CIRCUIT FOR SIGNALS COMPRISING AN INPUT TERMINAL TO WHICH SAID SIGNALS ARE APPLIED, AN OUTPUT TERMINAL FROM WHICH CLAMPED SIGNALS ARE DERIVED, A FIRST CAPACITOR, A SECOND CAPACITOR CONNECTED IN SERIES WITH SAID FIRST CAPACITOR, MEANS CONNECTING SAID FIRST AND SECOND CAPACITORS BETWEEN SAID INPUT AND OUTPUT TERMINALS, A FIRST TRANSISTOR OF ONE IMPURITY TYPE HAVING EMITTER, COLLECTOR AND BASE ELECTRODES, MEANS CONNECTING SAID FIRST TRANSISTOR COLLECTOR TO SAID SIGNAL INPUT TERMINAL, MEANS CONNECTING SAID FIRST TRANSISTOR EMITTER TO SAID SIGNAL OUTPUT TERMINAL, A FIRST BIAS SOURCE CONNECTED TO SAID FIRST TRANSISTOR BASE, A SECOND TRANSISTOR OF AN IMPURITY TYPE OPPOSITE TO THAT OF SAID FIRST TRANSISTOR HAVING BASE, EMITTER AND COLLECTOOR ELECTRODES, MEANS CONNECTING SAID SECOND TRANSISTOR COLLECTOR BETWEEN SAID FIRST AND SECOND CAPACITORS, MEANS CONNECTING SAID SECOND TRANSISTOR EMITTER TO SAID SIGNAL OUTPUT TERMINAL, AND A SECOND BIAS SOURCE CONNECTED TO THE BASE OF SAID SECOND TRANSISTOR.
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) | 1969-03-14 | 1969-09-13 | 1970-03-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-03-14 | 1973-09-13 | 1974-03-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-03-14 | 1977-09-13 | 1978-03-15 | $7700.00 | Window Closed / Lapsed |