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US2512866A
Expired / Lapsed
US
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Method of coating curved tubing
Assignee: GTE Sylvania Inc
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Filing: 1946-01-24
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Granted: 1950-06-27
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Expires: 1966-01-24
Abstract
No abstract record available.
Inventors
- 👤 Eric L Mager
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 05:21
CPC Classifications
H; H01; H01J; H01J9/00; H01J9/20; H01J9/22; H01J9/221; H01J9/223
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US949156A
Cited
US1188776A
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US1956722A
Cited
GB437755A
Cited
US2192869A
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US2179288A
Cited
US2318060A
Cited
US2413437A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-06-26 | 1953-12-26 | 1954-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-06-26 | 1957-12-26 | 1958-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-06-26 | 1961-12-26 | 1962-06-27 | $7700.00 | Window Closed / Lapsed |