US2528217A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of hermetic sealing of an evacuated enclosure, applying in particular to theluminescent discharge tubes
Assignee: Thales SA
•
Filing: 1947-10-06
•
Granted: 1950-10-31
•
Expires: 1967-10-06
Abstract
No abstract record available.
Inventors
- 👤 Dussaussoy Pierre
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 18:21
CPC Classifications
H; H01; H01J; H01J9/00; H01J9/24; H01J9/32; H01J9/323
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1911410A
Cited
US2248644A
Cited
GB495417A
Cited
US2188061A
Cited
US2264183A
Cited
US2273437A
Cited
US2296579A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-10-30 | 1954-05-01 | 1954-10-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-10-30 | 1958-05-01 | 1958-10-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-10-30 | 1962-05-01 | 1962-10-31 | $7700.00 | Window Closed / Lapsed |