Patent US2981864A successfully refreshed from Google Patents.
US2981864A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Image display device
Assignee: GTE Sylvania Inc
•
Filing: 1958-06-26
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Granted: 1961-04-25
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Expires: 1978-06-26
Abstract
No abstract record available.
Inventors
- 👤 Glen A Burdick
- 👤 Elmer O Stone
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 21:40
CPC Classifications
H; H01; H01J; H01J29/00; H01J29/46; H01J29/80
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2734147A
Cited
CH191981A
Cited
GB553466A
Cited
US2590764A
Cited
US2580250A
Cited
US2813224A
Cited
US2798185A
Cited
US2864032A
Cited
US2837689A
Cited
US2808526A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-04-24 | 1964-10-24 | 1965-04-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-04-24 | 1968-10-24 | 1969-04-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-04-24 | 1972-10-24 | 1973-04-25 | $7700.00 | Window Closed / Lapsed |