Patent US7274906B1 successfully refreshed from Google Patents.
US3401740A
Expired / Lapsed
US
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Gas turbine regenerator seal
Assignee: Ford Motor Co
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Filing: 1967-03-22
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Granted: 1968-09-17
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Expires: 1987-03-22
Abstract
No abstract record available.
Inventors
- 👤 John J Trudeau
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 21:23
CPC Classifications
F; F28; F28D; F28D19/00; F28D19/04; F28D19/041; F28D19/047; Y; Y10; Y10S; Y10S165/00; Y10S165/009; Y10S165/013; Y10S165/016; Y10S165/02; Y10S165/021; Y10S165/022
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2740614A
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US2880972A
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US3185208A
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US3204969A
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US3234999A
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US3311162A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-09-17 | 1972-03-18 | 1972-09-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-09-17 | 1976-03-18 | 1976-09-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-09-17 | 1980-03-18 | 1980-09-17 | $7700.00 | Window Closed / Lapsed |