US2879050A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat exchanger
Assignee: CIE METAUX DOVERPELT LOMMEL
•
Filing: 1954-09-28
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Granted: 1959-03-24
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Expires: 1974-09-28
Abstract
No abstract record available.
Inventors
- 👤 Folger Erwin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 18:30
CPC Classifications
F; F28; F28D; F28D7/00; F28D7/0008; Y; Y10; Y10S; Y10S165/00; Y10S165/051; Y10S165/052
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US312902A
Cited
US907336A
Cited
US1529756A
Cited
US1925711A
Cited
US1899080A
Cited
US2122521A
Cited
US2246329A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-03-23 | 1962-09-22 | 1963-03-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-03-23 | 1966-09-22 | 1967-03-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-03-23 | 1970-09-22 | 1971-03-24 | $7700.00 | Window Closed / Lapsed |