Patent US2984942A successfully refreshed from Google Patents.
US2984942A
Expired / Lapsed
US
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Method of and apparatus for manufacturing face plates of cathode ray tubes
Assignee: Pilkington Group Ltd
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Filing: 1957-05-08
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Granted: 1961-05-23
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Expires: 1977-05-08
Abstract
No abstract record available.
Inventors
- 👤 Hubert C Wynne
- 👤 Derek J Yates
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 08:11
CPC Classifications
C; C03; C03B; C03B29/00; C03B29/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1384967A
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US877729A
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US962861A
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US993555A
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US1424155A
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US1594557A
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US2073144A
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US2507433A
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US2427722A
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US2608029A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-05-22 | 1964-11-21 | 1965-05-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-05-22 | 1968-11-21 | 1969-05-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-05-22 | 1972-11-21 | 1973-05-23 | $7700.00 | Window Closed / Lapsed |