Patent US3383548A successfully refreshed from Google Patents.
US3383548A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sampling oscilloscope in which the vertical deflection signal is derived from pulse width modulated constant current pulses
Assignee: E H RES LAB Inc
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Filing: 1964-02-03
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Granted: 1968-05-14
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Expires: 1984-02-03
Abstract
No abstract record available.
Inventors
- 👤 Paul E Goodale
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:47
CPC Classifications
G; G01; G01R; G01R13/00; G01R13/20; G01R13/22; G01R13/34; G01R13/342
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
108 words
A CIRCUIT OF THE CHARACTER DESCRIBED FOR GENERATING A SLOW SIGNAL REPRESENTATIVE OF A FAST REPETITIVE WAVEFORM COMPRISING MEANS RESPONSIVE TO A TRIGGER PULSE WHICH IS IN SYNCHRONISM WITH THE INPUT WAVEFORM FOR GENERATING A DELAYED PULSE WHICH IS PROGRESSIVELY DELAYED WITH RESPECT TO SUCCESSIVE TRIGGER PULSES, MEANS RESPONSIVE TO THE DELAYED PULSE FORMING A CURRENT RAMP, MEANS FOR RECEIVING SAID CURRENT RAMP AND SAID INPUT WAVEFORM AND FORMING AN OUTPUT PULSE WHEN THEY HAVE A PREDETERMINED AMPLITUDE RELATIONSHIP, AND GATE MEANS RESPONSIVE TO SAID OUTPUT PULSE SERVING TO PROVIDE AN OUTPUT CURRENT PULSE HAVING A VARIABLE TIME DURATION CORRESPONDING TO THE SAMPLED AMPLITUDE OF SAID REPETITIVE WAVEFORM.
Claim 2
Dependent Claim
108 words
A CIRCUIT OF THE CHARACTER DESCRIBED FOR GENERATING A SLOW SIGNAL REPRESENTATIVE OF A FAST REPETITIVE WAVEFORM COMPRISING MEANS RESPONSIVE TO A TRIGGER PULSE WHICH IS IN SYNCHRONISM WITH THE INPUT WAVEFORM FOR GENERATING A DELAYED PULSE WHICH IS PROGRESSIVELY DELAYED WITH RESPECT TO SUCCESSIVE TRIGGER PULSES, MEANS RESPONSIVE TO THE DELAYED PULSE FORMING A CURRENT RAMP, MEANS FOR RECEIVING SAID CURRENT RAMP AND SAID INPUT WAVEFORM AND FORMING AN OUTPUT PULSE WHEN THEY HAVE A PREDETERMINED AMPLITUDE RELATIONSHIP, AND GATE MEANS RESPONSIVE TO SAID OUTPUT PULSE SERVING TO PROVIDE AN OUTPUT CURRENT PULSE HAVING A VARIABLE TIME DURATION CORRESPONDING TO THE SAMPLED AMPLITUDE OF SAID REPETITIVE WAVEFORM.
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) | 1971-05-14 | 1971-11-13 | 1972-05-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-05-14 | 1975-11-13 | 1976-05-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-05-14 | 1979-11-13 | 1980-05-14 | $7700.00 | Window Closed / Lapsed |