US2808448A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Glass to metal seal for high-frequency electronic tubes
Assignee: Thales SA
•
Filing: 1952-02-08
•
Granted: 1957-10-01
•
Expires: 1972-02-08
Abstract
No abstract record available.
Inventors
- 👤 Bleuze Jacques
- 👤 Dussaussoy Pierre
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 16:40
CPC Classifications
H; H01; H01J; H01J5/00; H01J5/32
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2014809A
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US2240064A
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US2446277A
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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) | 1960-09-30 | 1961-04-01 | 1961-10-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-09-30 | 1965-04-01 | 1965-10-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-09-30 | 1969-04-01 | 1969-10-01 | $7700.00 | Window Closed / Lapsed |