US2585043A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat exchanger
Assignee: Houdaille Hershey Corp
•
Filing: 1948-07-02
•
Granted: 1952-02-12
•
Expires: 1968-07-02
Abstract
No abstract record available.
Inventors
- 👤 Ray A Sandberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 21:16
CPC Classifications
F; F28; F28D; F28D1/00; F28D1/02; F28D1/04; F28D1/047; F28D1/0477; F28F; F28F1/00; F28F1/10; F28F1/12; F28F1/14; F28F1/22; F28F2225/00; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/4935; Y10T29/49364; Y10T29/49826; Y10T29/49908; Y10T29/49915
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US795479A
Cited
US2091584A
Cited
US2190288A
Cited
US2306772A
Cited
US2281299A
Cited
US2456506A
Cited
US3311579A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-02-11 | 1955-08-13 | 1956-02-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-02-11 | 1959-08-13 | 1960-02-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-02-11 | 1963-08-13 | 1964-02-12 | $7700.00 | Window Closed / Lapsed |