US3201688A
Expired / Lapsed
US
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Circuit for measuring rms value of pulses using an integrating circuit with predetermined time constant
Assignee: DUFFERS ASS
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Filing: 1961-01-17
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Granted: 1965-08-17
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Expires: 1981-01-17
Abstract
No abstract record available.
Inventors
- 👤 Hugo S Ferguson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 14:46
CPC Classifications
G; G01; G01R; G01R19/00; G01R19/04; B; B23; B23K; B23K11/00; B23K11/24; B23K11/25; G01R15/00; G01R19/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
59 words
A METER FOR INDICATING THE R.M.S. VALUE OF A.-C. PULSES OF THE TYPE DESCRIBED WHICH COMPRISES AN INTEGRATING CIRCUIT, MEANS FOR SUPPLYING SAID A.-C. PULSES TO SAID INTEGRATING CIRCUIT TO PRODUCE CORRESPONDING INTEGRATED SIGNALS, MEANS FOR REMOVING FROM SAID INTEGRATING CIRCUIT THE INTEGRATED SIGNAL CORRESPONDING TO ONE PULSE PRIOR TO THE INTEGRATION OF A SUCCEEDING PULESE, THE TIME CONSTANT
Claim 2
Dependent Claim
59 words
A METER FOR INDICATING THE R.M.S. VALUE OF A.-C. PULSES OF THE TYPE DESCRIBED WHICH COMPRISES AN INTEGRATING CIRCUIT, MEANS FOR SUPPLYING SAID A.-C. PULSES TO SAID INTEGRATING CIRCUIT TO PRODUCE CORRESPONDING INTEGRATED SIGNALS, MEANS FOR REMOVING FROM SAID INTEGRATING CIRCUIT THE INTEGRATED SIGNAL CORRESPONDING TO ONE PULSE PRIOR TO THE INTEGRATION OF A SUCCEEDING PULESE, THE TIME CONSTANT
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-08-16 | 1969-02-15 | 1969-08-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-16 | 1973-02-15 | 1973-08-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-16 | 1977-02-15 | 1977-08-17 | $7700.00 | Window Closed / Lapsed |