US2313315A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Composite soldered heat exchanger
Assignee: Western Cartridge Co
•
Filing: 1941-05-03
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Granted: 1943-03-09
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Expires: 1961-05-03
Abstract
No abstract record available.
Inventors
- 👤 Blais Emilien
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:04
CPC Classifications
F; F28; F28F; F28F21/00; F28F1/00; F28F1/006; Y; Y10; Y10S; Y10S165/00; Y10S165/355; Y10S165/442; Y10S165/448; Y10T; Y10T29/00; Y10T29/49; Y10T29/4935; Y10T29/49393
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) | 1946-03-08 | 1946-09-07 | 1947-03-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1950-03-08 | 1950-09-07 | 1951-03-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1954-03-08 | 1954-09-07 | 1955-03-09 | $7700.00 | Window Closed / Lapsed |