US3199584A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat exchanger
Assignee: Olin Corp
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Filing: 1963-02-08
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Granted: 1965-08-10
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Expires: 1983-02-08
Abstract
No abstract record available.
Inventors
- 👤 Charles A Heuer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 12:16
CPC Classifications
F; F25; F25B; F25B39/00; F25B39/02; F25B39/022; F25B39/024; F28; F28F; F28F3/00; F28F3/02
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
72 words
A HEAT EXCHANGE UNIT COMPRISING (A) A PANEL, (B) AT LEAST ONE HOLLOW TUBE WITHIN SAID PANEL, (C) AT LEAST ONE FIN EXTENDING THROU/GH AND INTEGRAL WITH SAID PANEL, SAID FIN COMPRISING TWO INTEGRAL TAB PORTIONS ROTATED OUT OF THE PLANE OF SAID PANEL ON A HINGE PORTION COMMON TO BOTH SAID TAB PORTIONS, AND (D) A HOLLOW TUBE CIRCUIT WITHIN SAID FIN IN COMMUNICATION WITH THE HOLLOW TUBE WITHIN SAID PANEL.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-08-09 | 1969-02-08 | 1969-08-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-09 | 1973-02-08 | 1973-08-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-09 | 1977-02-08 | 1977-08-10 | $7700.00 | Window Closed / Lapsed |