Patent US3388050A successfully refreshed from Google Patents.
Patent US3027142A successfully refreshed from Google Patents.
US3027142A
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Heat exchanger
Assignee: Reynolds Metals Co
•
Filing: 1956-05-28
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Granted: 1962-03-27
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Expires: 1976-05-28
Abstract
No abstract record available.
Inventors
- 👤 John P Albers
- 👤 Hubert G Huber
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 04:50
CPC Classifications
F; F28; F28F; F28F9/00; F28F9/02; F28F9/04; Y; Y10; Y10S; Y10S165/00; Y10S165/454; Y10S165/492; Y10S165/906
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1742348A
Cited
US1760505A
Cited
GB315934A
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GB373075A
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US2153806A
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GB489896A
Cited
US2164628A
Cited
US2225856A
Cited
US2488627A
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US2475007A
Cited
US2759248A
Cited
DE859745C
Cited
US2705616A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-03-26 | 1965-09-25 | 1966-03-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-03-26 | 1969-09-25 | 1970-03-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-03-26 | 1973-09-25 | 1974-03-27 | $7700.00 | Window Closed / Lapsed |