US2573709A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for rapid heat transfer in process material
Assignee: Price Brothers and Co Ltd
•
Filing: 1946-07-08
•
Granted: 1951-11-06
•
Expires: 1966-07-08
Abstract
No abstract record available.
Inventors
- 👤 Hill Harold Sanford
- 👤 James T Coghill
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 00:53
CPC Classifications
F; F28; F28D; F28D11/00; F28D11/06; Y; Y10; Y10T; Y10T74/00; Y10T74/18; Y10T74/18544
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-11-05 | 1955-05-07 | 1955-11-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-11-05 | 1959-05-07 | 1959-11-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-11-05 | 1963-05-07 | 1963-11-06 | $7700.00 | Window Closed / Lapsed |