US3175211A
Expired / Lapsed
US
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Assignee: Individual
•
Filing: 1961-09-26
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Granted: 1965-03-23
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Expires: 1981-09-26
Abstract
No abstract record available.
Inventors
- 👤 Dan Y Lee
- 👤 Robert L Hopton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 05:08
CPC Classifications
G; G05; G05D; G05D3/00; G05D3/12; G05D3/14; G05D3/1472; H; H03; H03M; H03M1/00; H03M1/12; H03M1/22
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
184 words
AN INTERMITTENT DIGITAL READOUT ADAPTED FOR A PORTABLE SIGNAL MEASURING INSTRUMENT COMPRISING A VARIABLE ATTENUATOR MEANS HAVING AN INPUT AND AN OUTPUT, SAID INPUT BEING ADAPTED TO BE COUPLED TO A SIGNAL TO BE MEASURED, AN EMITTER FOLLOWER HAVING AN INPUT AND AN OUTPUT, A COMMON-BASE AMPLIFIER HAVING AN INPUT AND AN OUTPUT, SAID EMITTER-FOLLOWER INPUT BEING COUPLED TO SAID ATTENUATING MEANS OUTPUT, SAID EMITTER-FOLLOWER OUTPUT BEING COUPLED TO SAID COMMON-BASE INPUT, SAID EMITTER-FOLLOWER AND SAID COMMON-BASE AMPLIFIER TOGETHER COMPRISING A DIFFERENTIAL AMPLIFIER, A COMPLEMENTARY SYMMETRY DRIVER STAGE HAVING AN INPUT AND FIRST AND SECOND OUTPUTS, A COMPLEMENTARY SYMMETRY POWER STAGE HAVING FIRST AND SECOND INPUTS AND AN OUTPUT, SAID OUTPUT OF SAID COMMON-BASE AMPLIFIER BEING COUPLED TO SAID INPUT OF SAID COMPLEMENTARY SYMMETRY DRIVER STAGE, SAID FIRST AND SECOND OUTPUTS OF SAID COMPLEMENTARY SYMMETRY DRIVER STAGE BEING COUPLED TO SAID FIRST AND SECOND INPUTS, OF SAID COMPLEMENTARY SYMMETRY POWER STAGE, RESPECTIVELY, A DIGITAL COUNTER, MOTOR MEANS FOR DRIVING SAID COUNTER, SAID MOTOR MEANS BEING ELECTRICALLY COUPLED TO SAID COMPLEMENTARY SYMMETRY POWER STAGE AND MECHANICALLY COUPLED TO SAID COUNTER AND TO SAIS ATTENUATING MEANS.
Claim 2
Dependent Claim
184 words
AN INTERMITTENT DIGITAL READOUT ADAPTED FOR A PORTABLE SIGNAL MEASURING INSTRUMENT COMPRISING A VARIABLE ATTENUATOR MEANS HAVING AN INPUT AND AN OUTPUT, SAID INPUT BEING ADAPTED TO BE COUPLED TO A SIGNAL TO BE MEASURED, AN EMITTER FOLLOWER HAVING AN INPUT AND AN OUTPUT, A COMMON-BASE AMPLIFIER HAVING AN INPUT AND AN OUTPUT, SAID EMITTER-FOLLOWER INPUT BEING COUPLED TO SAID ATTENUATING MEANS OUTPUT, SAID EMITTER-FOLLOWER OUTPUT BEING COUPLED TO SAID COMMON-BASE INPUT, SAID EMITTER-FOLLOWER AND SAID COMMON-BASE AMPLIFIER TOGETHER COMPRISING A DIFFERENTIAL AMPLIFIER, A COMPLEMENTARY SYMMETRY DRIVER STAGE HAVING AN INPUT AND FIRST AND SECOND OUTPUTS, A COMPLEMENTARY SYMMETRY POWER STAGE HAVING FIRST AND SECOND INPUTS AND AN OUTPUT, SAID OUTPUT OF SAID COMMON-BASE AMPLIFIER BEING COUPLED TO SAID INPUT OF SAID COMPLEMENTARY SYMMETRY DRIVER STAGE, SAID FIRST AND SECOND OUTPUTS OF SAID COMPLEMENTARY SYMMETRY DRIVER STAGE BEING COUPLED TO SAID FIRST AND SECOND INPUTS, OF SAID COMPLEMENTARY SYMMETRY POWER STAGE, RESPECTIVELY, A DIGITAL COUNTER, MOTOR MEANS FOR DRIVING SAID COUNTER, SAID MOTOR MEANS BEING ELECTRICALLY COUPLED TO SAID COMPLEMENTARY SYMMETRY POWER STAGE AND MECHANICALLY COUPLED TO SAID COUNTER AND TO SAIS ATTENUATING MEANS.
References Cited (Backward Citations)
US2775754A
Cited
US2940071A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-03-22 | 1968-09-21 | 1969-03-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-03-22 | 1972-09-21 | 1973-03-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-03-22 | 1976-09-21 | 1977-03-23 | $7700.00 | Window Closed / Lapsed |