US2933903A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cooling system for electronic apparatus
Assignee: TDK Micronas GmbH
•
Filing: 1958-01-21
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Granted: 1960-04-26
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Expires: 1978-01-21
Abstract
No abstract record available.
Inventors
- 👤 Jean I Kovalsky
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:10
CPC Classifications
H; H05; H05K; H05K7/00; H05K7/20; H05K7/20218; Y; Y10; Y10S; Y10S62/00; Y10S62/19
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-04-26 | 1963-10-26 | 1964-04-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-04-26 | 1967-10-26 | 1968-04-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-04-26 | 1971-10-26 | 1972-04-26 | $7700.00 | Window Closed / Lapsed |