Patent US2911199A successfully refreshed from Google Patents.
US2911199A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat exchanger
Assignee: Individual
•
Filing: 1956-03-29
•
Granted: 1959-11-03
•
Expires: 1976-03-29
Abstract
No abstract record available.
Inventors
- 👤 Huet Andre
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 19:28
CPC Classifications
F; F28; F28F; F28F1/00; F28F1/02; Y; Y10; Y10S; Y10S165/00; Y10S165/355; Y10S165/442
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
BE503507A
Cited
US1958331A
Cited
GB397664A
Cited
GB606674A
Cited
GB653147A
Cited
US2693941A
Cited
DE897417C
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-11-02 | 1963-05-04 | 1963-11-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-11-02 | 1967-05-04 | 1967-11-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-11-02 | 1971-05-04 | 1971-11-03 | $7700.00 | Window Closed / Lapsed |