Patent US2431658A successfully refreshed from Google Patents.
US2431658A
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US
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Apparatus for coating fluorescent lamp tubes
Assignee: GTE Sylvania Inc
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Filing: 1943-12-27
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Granted: 1947-11-25
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Expires: 1963-12-27
Abstract
No abstract record available.
Inventors
- 👤 Demb Kenneth
- 👤 Malcolm L Hayes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:59
CPC Classifications
B; B05; B05B; B05B13/00; B05B13/06; B05B13/0645; B05B13/0654; H; H01; H01J; H01J9/00; H01J9/20; H01J9/22; H01J9/221; H01J9/223; Y; Y10; Y10S; Y10S118/00; Y10S118/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2314515A
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US2181305A
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US2344081A
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US2275437A
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US2344905A
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US2336946A
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US2348714A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-11-24 | 1951-05-26 | 1951-11-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-11-24 | 1955-05-26 | 1955-11-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-11-24 | 1959-05-26 | 1959-11-25 | $7700.00 | Window Closed / Lapsed |