Patent US3773213A successfully refreshed from Google Patents.
US3401741A
Expired / Lapsed
US
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Rotary heat exchanger drive assembly
Assignee: Ford Motor Co
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Filing: 1966-12-21
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Granted: 1968-09-17
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Expires: 1986-12-21
Abstract
No abstract record available.
Inventors
- 👤 Paluszny Antoni
- 👤 Arbor Ann
- 👤 Topouzian Armenag
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 15:35
CPC Classifications
F; F28; F28D; F28D19/00; F28D19/04; F28D19/048; Y; Y10; Y10S; Y10S165/00; Y10S165/009; Y10S165/013; Y10S165/016; Y10S165/027; Y10S165/028; Y10T; Y10T74/00; Y10T74/19; Y10T74/1987; Y10T74/19893; Y10T74/19921
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) | 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 |