Patent US3128334A successfully refreshed from Google Patents.
US3128334A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Color television
Assignee: Zenith Electronics LLC
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Filing: 1962-01-03
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Granted: 1964-04-07
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Expires: 1982-01-03
Abstract
No abstract record available.
Inventors
- 👤 Charles H Heuer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 12:32
CPC Classifications
H; H04; H04N; H04N5/00; H04N5/44; H04N5/57
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
85 words
A LUMINANCE CONTROL CIRCUIT FOR A TELEVISION RECEIVER COMPRISING: A SIGNAL SOURCE FOR PROVIDING A LUMINANCE SIGNAL HAVING AMPLITUDE VARIATIONS REPRESENTATIVE OF AN IMAGE TO BE REPRODUCED; A LUMINANCE SIGNAL TRANSLATING CHANNEL, INCLUDING AN ELECTRON DEVICE, FOR TRANSLATING SAID LUMINANCE SIGNAL TO AN IMAGE-REPRODUCING DEVICE; A LUMINANCE-SIGNAL TIME DELAY NETWORK INCLUDED IN SAID CHANNEL, TERMINATED AT ONE END IN ITS CHARACTERISTIC IMPEDANCE AND COUPLED AT SAID TERMINATED END TO SAID ELECTRON DEVICE; MEANS FOR COUPLING THE REMAINING END OF SAID DELAY NETWORK TO SAID SOURCE;
Claim 2
Dependent Claim
85 words
A LUMINANCE CONTROL CIRCUIT FOR A TELEVISION RECEIVER COMPRISING: A SIGNAL SOURCE FOR PROVIDING A LUMINANCE SIGNAL HAVING AMPLITUDE VARIATIONS REPRESENTATIVE OF AN IMAGE TO BE REPRODUCED; A LUMINANCE SIGNAL TRANSLATING CHANNEL, INCLUDING AN ELECTRON DEVICE, FOR TRANSLATING SAID LUMINANCE SIGNAL TO AN IMAGE-REPRODUCING DEVICE; A LUMINANCE-SIGNAL TIME DELAY NETWORK INCLUDED IN SAID CHANNEL, TERMINATED AT ONE END IN ITS CHARACTERISTIC IMPEDANCE AND COUPLED AT SAID TERMINATED END TO SAID ELECTRON DEVICE; MEANS FOR COUPLING THE REMAINING END OF SAID DELAY NETWORK TO SAID SOURCE;
References Cited (Backward Citations)
US2999897A
Cited
US3009989A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-04-07 | 1967-10-07 | 1968-04-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-04-07 | 1971-10-07 | 1972-04-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-04-07 | 1975-10-07 | 1976-04-07 | $7700.00 | Window Closed / Lapsed |