US2777975A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cooling device for semi-conducting elements
Assignee: Thales SA
•
Filing: 1955-07-01
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Granted: 1957-01-15
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Expires: 1975-07-01
Abstract
No abstract record available.
Inventors
- 👤 Aigrain Pierre
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 18:49
CPC Classifications
H; H10; H10W; H10W40/00; H10W40/20; H10W40/28; H10N; H10N10/00; H10W72/00; H10W72/50; H10W72/531; H10W72/536; Y; Y10; Y10S; Y10S257/00; Y10S257/93
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-01-15 | 1960-07-16 | 1961-01-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-01-15 | 1964-07-16 | 1965-01-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-01-15 | 1968-07-16 | 1969-01-15 | $7700.00 | Window Closed / Lapsed |