Patent US2864589A successfully refreshed from Google Patents.
US2864589A
Expired / Lapsed
US
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Heat transfer device
Assignee: United Aircraft Products Inc
•
Filing: 1955-06-14
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Granted: 1958-12-16
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Expires: 1975-06-14
Abstract
No abstract record available.
Inventors
- 👤 Harry T Booth
- 👤 Jr Frank E Carroll
- 👤 Kenneth O Parker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:11
CPC Classifications
F; F28; F28D; F28D7/00; F28D7/16; F28D7/1607; F28F; F28F27/00; F28F27/02; Y; Y10; Y10S; Y10S236/00; Y10S236/05
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1009820A
Cited
US1989585A
Cited
US2190232A
Cited
US2577832A
Cited
US2725069A
Cited
US2809810A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-12-15 | 1962-06-16 | 1962-12-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-12-15 | 1966-06-16 | 1966-12-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-12-15 | 1970-06-16 | 1970-12-16 | $7700.00 | Window Closed / Lapsed |