Patent US3274500A successfully refreshed from Google Patents.
US3274500A
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Apparatus to measure the period of an input signal
Assignee: Individual
•
Filing: 1964-08-31
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Granted: 1966-09-20
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Expires: 1984-08-31
Abstract
No abstract record available.
Inventors
- 👤 Phillip S Bengston
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 15:26
CPC Classifications
H; H04; H04N; H04N9/00; H04N9/79; H04N9/80; H04N9/82
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
99 words
APPARATUS TO MEASURE THE PERIOD OF A SIGNAL COMPRISING FIRST MEANS TO PRODUCE POSITIVE AND NEGATIVE PULSES FOR EACH CYCLE OF A SIGNAL APPLIED THERETO, GENERATOR MEANS COUPLED TO SAID FIRST MEANS TO INTITIATE A SAW-TOOTH VOLTAGE IN RESPONSE TO A PULSE OF ONE POLARITY, SAID SAWTOOTH VOLTAGE HAVING A PEAK VALUE AND SAMPLING MEANS COUPLED TO SAID FIRST MEANS AND TO SAID GENERATION MEANS FOR SAMPLING THE SAW-TOOTH VOLTAGE WHEN THE PULSE OF THE OTHER POLARITY OCCURS, WHEREBY AN OUTPUT PRODUCED BY SAID SAMPLING MEANS IS INDICATIVE OF THE PERIOD OF THE SIGNAL APPLIED TO SAID FIRST MEANS.
Claim 2
Dependent Claim
99 words
APPARATUS TO MEASURE THE PERIOD OF A SIGNAL COMPRISING FIRST MEANS TO PRODUCE POSITIVE AND NEGATIVE PULSES FOR EACH CYCLE OF A SIGNAL APPLIED THERETO, GENERATOR MEANS COUPLED TO SAID FIRST MEANS TO INTITIATE A SAW-TOOTH VOLTAGE IN RESPONSE TO A PULSE OF ONE POLARITY, SAID SAWTOOTH VOLTAGE HAVING A PEAK VALUE AND SAMPLING MEANS COUPLED TO SAID FIRST MEANS AND TO SAID GENERATION MEANS FOR SAMPLING THE SAW-TOOTH VOLTAGE WHEN THE PULSE OF THE OTHER POLARITY OCCURS, WHEREBY AN OUTPUT PRODUCED BY SAID SAMPLING MEANS IS INDICATIVE OF THE PERIOD OF THE SIGNAL APPLIED TO SAID FIRST MEANS.
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) | 1969-09-19 | 1970-03-21 | 1970-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-19 | 1974-03-21 | 1974-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-19 | 1978-03-21 | 1978-09-20 | $7700.00 | Window Closed / Lapsed |