US4368405B1
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electron gun for a cathode ray tube
Assignee: Toshiba Corp
•
Filing: 1980-09-26
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Granted: 1995-10-24
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Expires: 2000-09-26
Abstract
No abstract record available.
Inventors
- 👤 Shigeo Takenaka
- 👤 Eizaburo Hamano
- 👤 Shinpei Koshigoe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 14:57
CPC Classifications
H; H01; H01J; H01J29/00; H01J29/46; H01J29/48; H01J29/50; H01J29/503; H01J29/58; H01J29/62; H01J29/622; H01J29/624
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) | 1998-10-23 | 1999-04-24 | 1999-10-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2002-10-23 | 2003-04-24 | 2003-10-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2006-10-23 | 2007-04-24 | 2007-10-24 | $7700.00 | Window Closed / Lapsed |