Patent US2564153A successfully refreshed from Google Patents.
US2564153A
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US
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Shielded heat exchanger
Assignee: Garrett Corp
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Filing: 1946-08-13
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Granted: 1951-08-14
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Expires: 1966-08-13
Abstract
No abstract record available.
Inventors
- 👤 John E Comeau
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 13:41
CPC Classifications
F; F28; F28F; F28F9/00; F28F9/02; F28F9/026; F28F9/0282; F28D; F28D7/00; F28D7/0041; F28D7/16; F28D7/1615; F28F9/0229; F28F2265/00; F28F2265/26
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) | 1954-08-13 | 1955-02-12 | 1955-08-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-08-13 | 1959-02-12 | 1959-08-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-08-13 | 1963-02-12 | 1963-08-14 | $7700.00 | Window Closed / Lapsed |