US3440468A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Three electron gun color picture tube
Assignee: Nippon Columbia Co Ltd
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Filing: 1966-11-29
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Granted: 1969-04-22
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Expires: 1986-11-29
Abstract
No abstract record available.
Inventors
- 👤 Hirofumi Suzuki
- 👤 Michiharu Koike
- 👤 Hisashi Fujiwara
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 19:19
CPC Classifications
H; H01; H01J; H01J29/00; H01J29/46; H01J29/70; H01J29/701; H01J29/702; H01J2229/00; H01J2229/56; H01J2229/568; H01J2229/5681; H01J2229/5684
Claims Analysis
Total Claims: 0
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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) | 1972-04-21 | 1972-10-21 | 1973-04-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-04-21 | 1976-10-21 | 1977-04-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-04-21 | 1980-10-21 | 1981-04-22 | $7700.00 | Window Closed / Lapsed |