US2376859A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reverse cycle heating and cooling system
Assignee: Individual
•
Filing: 1943-12-29
•
Granted: 1945-05-29
•
Expires: 1963-12-29
Abstract
No abstract record available.
Inventors
- 👤 Stephen J Benn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:09
CPC Classifications
F; F25; F25B; F25B29/00; F25B29/003; F24; F24F; F24F3/00; F24F3/001; F25B13/00; F25B2313/00; F25B2313/027; F25B2313/02791
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1948-05-28 | 1948-11-27 | 1949-05-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1952-05-28 | 1952-11-27 | 1953-05-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1956-05-28 | 1956-11-27 | 1957-05-29 | $7700.00 | Window Closed / Lapsed |