US3470703A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hypersonic cooling device
Assignee: LIAN TONG WEN
•
Filing: 1968-01-16
•
Granted: 1969-10-07
•
Expires: 1988-01-16
Abstract
No abstract record available.
Inventors
- 👤 Lian-Tong Wen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 09:39
CPC Classifications
B; B64; B64D; B64D13/00; B64D13/006; Y; Y02; Y02T; Y02T50/00; Y02T50/50
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2391838A
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US2441279A
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US2412110A
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US2618470A
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US2453923A
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US2851863A
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US2958482A
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US2930553A
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US2944409A
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US3158197A
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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) | 1972-10-06 | 1973-04-07 | 1973-10-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-10-06 | 1977-04-07 | 1977-10-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-10-06 | 1981-04-07 | 1981-10-07 | $7700.00 | Window Closed / Lapsed |