Patent US2726593A successfully refreshed from Google Patents.
US2726593A
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Hot air panel and circulatory heating system
Assignee: FOREST GLEN AYERS
•
Filing: 1952-02-18
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Granted: 1955-12-13
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Expires: 1972-02-18
Abstract
No abstract record available.
Inventors
- 👤 Anard A Lahti
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 10:01
CPC Classifications
F; F24; F24D; F24D5/00; F24D5/06; F24D5/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2001801A
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US2195691A
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US2364265A
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US2523807A
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US2559198A
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US2465184A
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US2621027A
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US2603140A
Cited
US2593424A
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US2619288A
Cited
US2629309A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-12-12 | 1959-06-13 | 1959-12-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-12-12 | 1963-06-13 | 1963-12-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-12-12 | 1967-06-13 | 1967-12-13 | $7700.00 | Window Closed / Lapsed |