US3389290A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electron gun device
Assignee: Sony Corp
•
Filing: 1965-04-06
•
Granted: 1968-06-18
•
Expires: 1985-04-06
Abstract
No abstract record available.
Inventors
- 👤 Yoshida Susumu
- 👤 Sato Hiroki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:15
CPC Classifications
H; H01; H01J; H01J1/00; H01J1/02; H01J1/13; H01J1/15; H01J29/00; H01J29/02; H01J29/04; H01J29/46; H01J29/48; H01J29/485
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2030695A
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DE739251C
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US2243250A
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US2438732A
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US2904717A
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US3073717A
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US3085317A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-06-18 | 1971-12-18 | 1972-06-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-06-18 | 1975-12-18 | 1976-06-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-06-18 | 1979-12-18 | 1980-06-18 | $7700.00 | Window Closed / Lapsed |