US2267619A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of manufacturing plate heat exchangers
Assignee: American Heat Reclaiming Corp
•
Filing: 1938-06-22
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Granted: 1941-12-23
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Expires: 1958-06-22
Abstract
No abstract record available.
Inventors
- 👤 Strom Sven Gosta
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 16:06
CPC Classifications
B; B21; B21D; B21D53/00; B21D53/02; B21D53/027; Y; Y10; Y10S; Y10S29/00; Y10S29/042; Y10T; Y10T29/00; Y10T29/49; Y10T29/4935; Y10T29/49366
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1944-12-22 | 1945-06-23 | 1945-12-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1948-12-22 | 1949-06-23 | 1949-12-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1952-12-22 | 1953-06-23 | 1953-12-23 | $7700.00 | Window Closed / Lapsed |