US2666160A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Disk seal tube
Assignee: GTE Sylvania Inc
•
Filing: 1946-06-24
•
Granted: 1954-01-12
•
Expires: 1966-06-24
Abstract
No abstract record available.
Inventors
- 👤 Robert M Bowie
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 08:32
CPC Classifications
H; H03; H03F; H03F3/00; H03F3/54
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2353743A
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US2412160A
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US2367331A
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US2408355A
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US2408927A
Cited
US2413171A
Cited
US2412055A
Cited
US2419578A
Cited
US2473827A
Cited
US2466136A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-01-11 | 1957-07-13 | 1958-01-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-01-11 | 1961-07-13 | 1962-01-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-01-11 | 1965-07-13 | 1966-01-12 | $7700.00 | Window Closed / Lapsed |