Patent US4464192A successfully refreshed from Google Patents.
Patent US3718752A successfully refreshed from Google Patents.
US3718752A
Expired / Lapsed
US
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Color television camera
Assignee: NEC Corp
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Filing: 1970-12-28
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Granted: 1973-02-27
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Expires: 1990-12-28
Abstract
Abstract A COLOR TELEVISION CAMERA EMPLOYS A RECEIVING LENS SYSTEM FOR DIRECTING LIGHT CORRESPONDING TO A VIEWED SUBJECT ALONG A FIRST AXIS OF A COMPOUND COLOR SEPARATION PRISM. ALOS, AUXILIARY LIGHT FROM A SOURCE THEREOF, AS FOR BIAS LIGHT PURPOSES, IS DIRECTED TO THE PRISM ALONG AN AXIS DISTANCE FROM THE FIRST AXIS. D R A W I N G
Inventors
- 👤 T Katsuta
- 👤 Y Ushiyama
- 👤 K Kano
- 👤 M Kawasaki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 09:38
CPC Classifications
G; G02; G02B; G02B27/00; G02B27/10; G02B27/1006; H; H04; H04N; H04N23/00; H04N23/10; H04N23/13; H04N23/16; G02B27/1013; G02B27/14; G02B27/145; G03; G03B; G03B33/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-02-27 | 1976-08-28 | 1977-02-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-02-27 | 1980-08-28 | 1981-02-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-02-27 | 1984-08-28 | 1985-02-27 | $7700.00 | Window Closed / Lapsed |