Patent US2677920A successfully refreshed from Google Patents.
US2677920A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tight enclosures manufacturing
Assignee: Thales SA
•
Filing: 1951-01-17
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Granted: 1954-05-11
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Expires: 1971-01-17
Abstract
No abstract record available.
Inventors
- 👤 Danzin Andre
- 👤 Dussaussoy Pierre
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 14:50
CPC Classifications
H; H01; H01J; H01J5/00; H01J5/20; H01J5/22; H01J5/24; H01J2893/00; H01J2893/0033; H01J2893/0037; H01J2893/0038; H01J2893/0039; Y; Y10; Y10S; Y10S65/00; Y10S65/04; Y10T; Y10T428/00; Y10T428/19; Y10T428/192; Y10T428/195
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1206177A
Cited
US1796401A
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GB536858A
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US2268670A
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US2333186A
Cited
GB582566A
Cited
US2504504A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-05-10 | 1957-11-09 | 1958-05-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-05-10 | 1961-11-09 | 1962-05-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-05-10 | 1965-11-09 | 1966-05-11 | $7700.00 | Window Closed / Lapsed |