US2991047A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat exchanger
Assignee: Borg Warner Corp
•
Filing: 1957-07-26
•
Granted: 1961-07-04
•
Expires: 1977-07-26
Abstract
No abstract record available.
Inventors
- 👤 Bailys Carl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 09:47
CPC Classifications
F; F28; F28F; F28F3/00; F28F3/12; F28F3/14; Y; Y10; Y10S; Y10S165/00; Y10S165/454; Y10T; Y10T29/00; Y10T29/49; Y10T29/4935; Y10T29/49366
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1823003A
Cited
US2375334A
Cited
US2582358A
Cited
US2690002A
Cited
US2759247A
Cited
US2652233A
Cited
US2647731A
Cited
US2779086A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-07-03 | 1965-01-02 | 1965-07-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-07-03 | 1969-01-02 | 1969-07-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-07-03 | 1973-01-02 | 1973-07-04 | $7700.00 | Window Closed / Lapsed |