US2857541A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thin sheet of phosphor embedded glass and method of preparing
Assignee: Westinghouse Electric Corp
•
Filing: 1954-03-29
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Granted: 1958-10-21
•
Expires: 1974-03-29
Abstract
No abstract record available.
Inventors
- 👤 Eugene P Etzel
- 👤 Wei Chung Kwai Lui
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:14
CPC Classifications
H; H05; H05B; H05B33/00; H05B33/12; H05B33/14; H05B33/145
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2049765A
Cited
US2208034A
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US2151496A
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US2314824A
Cited
US2508901A
Cited
US2566349A
Cited
US2689188A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-10-20 | 1962-04-21 | 1962-10-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-10-20 | 1966-04-21 | 1966-10-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-10-20 | 1970-04-21 | 1970-10-21 | $7700.00 | Window Closed / Lapsed |