Patent US2649975A successfully refreshed from Google Patents.
US2649975A
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Lamp transfer apparatus
Assignee: GTE Sylvania Inc
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Filing: 1949-12-29
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Granted: 1953-08-25
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Expires: 1969-12-29
Abstract
No abstract record available.
Inventors
- 👤 Joseph H Brooks
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 09:56
CPC Classifications
H; H01; H01J; H01J9/00; H01J9/46; H01J2893/00; H01J2893/0096
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1479809A
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US1593825A
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US1811832A
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US1786608A
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US1859956A
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US2082352A
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US2096264A
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US2468405A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-08-24 | 1957-02-23 | 1957-08-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-08-24 | 1961-02-23 | 1961-08-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-08-24 | 1965-02-23 | 1965-08-25 | $7700.00 | Window Closed / Lapsed |