Patent US2656159A successfully refreshed from Google Patents.
US2656159A
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Laminated heat exchanger
Assignee: Alstom Power Inc
•
Filing: 1948-07-24
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Granted: 1953-10-20
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Expires: 1968-07-24
Abstract
No abstract record available.
Inventors
- 👤 Holm Sven
- 👤 William E Hammond
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 02:17
CPC Classifications
F; F28; F28F; F28F9/00; F28F9/02; F28F9/026; F28F9/027; F28F9/0275; F28F3/00; F28F3/08; F28F3/086; Y; Y10; Y10S; Y10S165/00; Y10S165/355; Y10S165/356; Y10S165/36
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB188818516A
Cited
US1508860A
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US1734274A
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US1863586A
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DE618450C
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US2179702A
Cited
US2537276A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-10-19 | 1957-04-20 | 1957-10-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-10-19 | 1961-04-20 | 1961-10-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-10-19 | 1965-04-20 | 1965-10-20 | $7700.00 | Window Closed / Lapsed |