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US2486833A
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Heat storage and supply means
Assignee: Individual
•
Filing: 1944-11-17
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Granted: 1949-11-01
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Expires: 1964-11-17
Abstract
No abstract record available.
Inventors
- 👤 William J Freund
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 10:24
CPC Classifications
F; F25; F25B; F25B27/00; F25B27/002; F25B27/007; F28; F28D; F28D20/00; F28D20/0034; F28D20/0039; F28D2020/0065; F28D2020/0086; F28D2020/0095; Y; Y02; Y02E; Y02E60/00; Y02E60/14; Y10; Y10S; Y10S203/00; Y10S203/01; Y10T; Y10T137/00; Y10T137/7287; Y10T137/7358; Y10T137/7439; Y10T137/8593; Y10T137/86187; Y10T137/86196; Y10T137/86381
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US787909A
Cited
US1274011A
Cited
US1295687A
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US1372540A
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US2297761A
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US2291033A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-10-31 | 1953-05-02 | 1953-11-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-10-31 | 1957-05-02 | 1957-11-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-10-31 | 1961-05-02 | 1961-11-01 | $7700.00 | Window Closed / Lapsed |