US2878656A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat exchanger
Assignee: Borg Warner Corp
•
Filing: 1955-10-31
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Granted: 1959-03-24
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Expires: 1975-10-31
Abstract
No abstract record available.
Inventors
- 👤 Stanley A Domal
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 18:50
CPC Classifications
F; F28; F28D; F28D1/00; F28D1/02; F28D1/04; F28D1/053; F28D1/0535; F28D1/05366; F28D1/05391; F28F; F28F17/00; F28F17/005; F28F9/00; F28F9/02; F28F9/0202; F28F9/0204; F28F9/0209
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1884080A
Cited
US2212710A
Cited
US2323176A
Cited
US2394402A
Cited
US2614816A
Cited
US2743908A
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 |