Patent US2951814A successfully refreshed from Google Patents.
US2951814A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Phosphor
Assignee: Westinghouse Electric Corp
•
Filing: 1957-05-13
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Granted: 1960-09-06
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Expires: 1977-05-13
Abstract
No abstract record available.
Inventors
- 👤 Destriau Georges
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 04:03
CPC Classifications
G; G21; G21K; G21K4/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
6 words
A PHOSPHOR MATERIAL CONSISTING ESSENTIALLY OF
Claim 2
Dependent Claim
6 words
A PHOSPHOR MATERIAL CONSISTING ESSENTIALLY OF
References Cited (Backward Citations)
US2402757A
Cited
US2454499A
Cited
US2623858A
Cited
US2614082A
Cited
US2780731A
Cited
US2782168A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-09-06 | 1964-03-07 | 1964-09-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-09-06 | 1968-03-07 | 1968-09-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-09-06 | 1972-03-07 | 1972-09-06 | $7700.00 | Window Closed / Lapsed |