US2782009A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat exchangers
Assignee: Motors Liquidation Co
•
Filing: 1952-03-14
•
Granted: 1957-02-19
•
Expires: 1972-03-14
Abstract
No abstract record available.
Inventors
- 👤 Edward V Rippingille
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:59
CPC Classifications
F; F28; F28F; F28F3/00; F28F3/02; F28F3/025; F28D; F28D9/00; F28D9/0062; Y; Y10; Y10S; Y10S165/00; Y10S165/355; Y10S165/356; Y10S165/387
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2419233A
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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) | 1960-02-19 | 1960-08-20 | 1961-02-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-02-19 | 1964-08-20 | 1965-02-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-02-19 | 1968-08-20 | 1969-02-19 | $7700.00 | Window Closed / Lapsed |