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US2623181A
Expired / Lapsed
US
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Fluorescent screen
Assignee: General Electric Co
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Filing: 1948-11-12
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Granted: 1952-12-23
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Expires: 1968-11-12
Abstract
No abstract record available.
Inventors
- 👤 Howard W Goodrick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 02:26
CPC Classifications
G; G21; G21K; G21K4/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1394296A
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US2088595A
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US2049765A
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US2116633A
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US2298947A
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US2452522A
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US2355258A
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US2452523A
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US2433129A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-12-23 | 1956-06-23 | 1956-12-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-12-23 | 1960-06-23 | 1960-12-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-12-23 | 1964-06-23 | 1964-12-23 | $7700.00 | Window Closed / Lapsed |