Patent US3148337A successfully refreshed from Google Patents.
US3148337A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Temperature compensated signal-controlled current source
Assignee: HP Inc
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Filing: 1962-10-01
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Granted: 1964-09-08
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Expires: 1982-10-01
Abstract
No abstract record available.
Inventors
- 👤 Philip B Spohn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 23:27
CPC Classifications
G; G05; G05F; G05F3/00; G05F3/02; G05F3/08; G05F3/10; G05F3/16; G05F3/20; G05F3/22; G05F3/222; G05F3/225
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
153 words
A CIRCUIT FOR AMPLIFYING SIGNALS APPLIED THERETO FROM A SIGNAL SOURCE, SAID CIRCUIT COMPRISING A PAIR OF GAIN ELEMENTS, EACH HAVING FIRST AND SECOND ELECTRODES FORMING AN INPUT CIRCUIT AND HAVING SECOND AND THIRD ELECTRODES FORMING AN OUTPUT CIRCUIT, A BRIDGE NETWORK INCLUDING PLURAL BRANCHES CONNECTED BETWEEN JUNCTION POINTS, AN UTILIZATION CIRCUIT, MEANS INCLUDING SAID UTILIZATION CIRCUIT AND THE OUTPUT CIRCUIT OF ONE OF SAID PAIR OF GAIN ELEMENTS AND FORMING ONE OF SAID BRANCHES, MEANS INCLUDING SAID SIGNAL SOURCE AND THE OUTPUT CIRCUIT OF THE OTHER OF SAID PAIR OF GAIN ELEMENTS AND FORMING ANOTHER OF SAID BRANCHES, MEANS CONNECTING THE FIRST ELECTRODES OF SAID GAIN ELEMENTS TOGETHER, A THIRD GAIN ELEMENT HAVING FIRST AND SECOND ELECTRODES FORMING AN INPUT CIRCUIT AND HAVING SECOND AND THIRD ELECTRODES FORMING AN OUTPUT CIRCUIT, MEANS CONNECTING THE OUTPUT CIRCUIT OF THE THIRD GAIN ELEMENT TO THE FIRST AND THIRD ELECTRODES OF SAID ONE GAIN ELEMENT,
Claim 2
Dependent Claim
153 words
A CIRCUIT FOR AMPLIFYING SIGNALS APPLIED THERETO FROM A SIGNAL SOURCE, SAID CIRCUIT COMPRISING A PAIR OF GAIN ELEMENTS, EACH HAVING FIRST AND SECOND ELECTRODES FORMING AN INPUT CIRCUIT AND HAVING SECOND AND THIRD ELECTRODES FORMING AN OUTPUT CIRCUIT, A BRIDGE NETWORK INCLUDING PLURAL BRANCHES CONNECTED BETWEEN JUNCTION POINTS, AN UTILIZATION CIRCUIT, MEANS INCLUDING SAID UTILIZATION CIRCUIT AND THE OUTPUT CIRCUIT OF ONE OF SAID PAIR OF GAIN ELEMENTS AND FORMING ONE OF SAID BRANCHES, MEANS INCLUDING SAID SIGNAL SOURCE AND THE OUTPUT CIRCUIT OF THE OTHER OF SAID PAIR OF GAIN ELEMENTS AND FORMING ANOTHER OF SAID BRANCHES, MEANS CONNECTING THE FIRST ELECTRODES OF SAID GAIN ELEMENTS TOGETHER, A THIRD GAIN ELEMENT HAVING FIRST AND SECOND ELECTRODES FORMING AN INPUT CIRCUIT AND HAVING SECOND AND THIRD ELECTRODES FORMING AN OUTPUT CIRCUIT, MEANS CONNECTING THE OUTPUT CIRCUIT OF THE THIRD GAIN ELEMENT TO THE FIRST AND THIRD ELECTRODES OF SAID ONE GAIN ELEMENT,
References Cited (Backward Citations)
US2691075A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-09-08 | 1968-03-09 | 1968-09-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-09-08 | 1972-03-09 | 1972-09-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-09-08 | 1976-03-09 | 1976-09-08 | $7700.00 | Window Closed / Lapsed |