US3537165A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making a plate-type heat exchanger
Assignee: Alstom Power Inc
•
Filing: 1968-06-26
•
Granted: 1970-11-03
•
Expires: 1988-06-26
Abstract
No abstract record available.
Inventors
- 👤 David A Paddock
- 👤 Carrol B Kemp
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 00:13
CPC Classifications
F; F28; F28F; F28F3/00; F28F3/02; F28F3/04; F28F3/042; F28F3/046; F28D; F28D9/00; F28D9/0031; F28D9/0043; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/4935; Y10T29/49366; Y10T29/49393; Y10T29/49826; Y10T29/49904
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USRE19778E
Cited
US1685388A
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US1709865A
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US1831533A
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US2617634A
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US2554185A
Cited
US3266128A
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US3240268A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-11-02 | 1974-05-04 | 1974-11-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-11-02 | 1978-05-04 | 1978-11-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-11-02 | 1982-05-04 | 1982-11-03 | $7700.00 | Window Closed / Lapsed |