US2626130A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat exchanger device
Assignee: Individual
•
Filing: 1949-08-19
•
Granted: 1953-01-20
•
Expires: 1969-08-19
Abstract
No abstract record available.
Inventors
- 👤 Raskin Leon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 21:05
CPC Classifications
F; F28; F28F; F28F3/00; F28F3/12; B; B21; B21D; B21D53/00; B21D53/02; B21D53/04; F25; F25B; F25B39/00; F25B39/02; F25B39/022; F25B39/024
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2028457A
Cited
US2143976A
Cited
US2244475A
Cited
US2481511A
Cited
US2481512A
Cited
US2481556A
Cited
US2496558A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-01-20 | 1956-07-21 | 1957-01-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-01-20 | 1960-07-21 | 1961-01-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-01-20 | 1964-07-21 | 1965-01-20 | $7700.00 | Window Closed / Lapsed |