Patent US3183452A successfully refreshed from Google Patents.
US3183452A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multivibrator using electroluminescent-photoconductive control elements
Assignee: Westinghouse Electric Corp
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Filing: 1961-09-18
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Granted: 1965-05-11
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Expires: 1981-09-18
Abstract
No abstract record available.
Inventors
- 👤 Jr Edgar A Sack
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 17:06
CPC Classifications
H; H03; H03K; H03K3/00; H03K3/02; H03K3/42
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
65 words
IN A CONTROL APPARATUS, IN COMBINATION, FIRST AND SECOND CONTROL ELEMENTS, EACH SAID CONTROL ELEMENT COMPRISING AN ELECTRORADIATIVE TRANSDUCER HAVING CONTROL TERMINALS AND A RADIATION SENSITIVE DEVICE HAVING LOAD TERMINALS, MEANS FOR CONNECTING A DIRECT CURRENT SOURCE TO A PARALLEL CIRCUIT HAVING TWO BRANCHES, EACH OF SAID BRANCHES COMPRISING SAID RADIATION SENSITIVE DEVICE OF ONE OF SAID CONTROL ELEMENTS AND A RESISTIVE MEANS, CIRCUIT 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) | 1968-05-10 | 1968-11-09 | 1969-05-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-05-10 | 1972-11-09 | 1973-05-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-05-10 | 1976-11-09 | 1977-05-11 | $7700.00 | Window Closed / Lapsed |