US2645462A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Plate type heat exchanger
Assignee: Alstom Power Inc
•
Filing: 1950-02-18
•
Granted: 1953-07-14
•
Expires: 1970-02-18
Abstract
No abstract record available.
Inventors
- 👤 Holm Sven
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:09
CPC Classifications
F; F28; F28F; F28F3/00; F28F3/02; Y; Y10; Y10S; Y10S165/00; Y10S165/355; Y10S165/453
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US765857A
Cited
GB233547A
Cited
US2033402A
Cited
GB452231A
Cited
GB559107A
Cited
US2439208A
Cited
US2505619A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-07-13 | 1957-01-12 | 1957-07-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-07-13 | 1961-01-12 | 1961-07-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-07-13 | 1965-01-12 | 1965-07-14 | $7700.00 | Window Closed / Lapsed |