US2286920A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air conditioning system
Assignee: E B MILLER ENGINEERING Co
•
Filing: 1939-12-21
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Granted: 1942-06-16
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Expires: 1959-12-21
Abstract
No abstract record available.
Inventors
- 👤 Ernest B Miller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:11
CPC Classifications
F; F24; F24F; F24F3/00; F24F3/12; F24F3/14; F24F3/1411; F24F3/1423; F24F2003/1458; F24F2003/1464; F24F2203/00; F24F2203/10; F24F2203/1012; F24F2203/1032; F24F2203/1036; F24F2203/1052; F24F2203/1056; F24F2203/1064; F24F2203/1068; F24F2203/108; F24F2203/1096
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) | 1945-06-15 | 1945-12-15 | 1946-06-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1949-06-15 | 1949-12-15 | 1950-06-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1953-06-15 | 1953-12-15 | 1954-06-16 | $7700.00 | Window Closed / Lapsed |