Patent BE858882A successfully refreshed from Google Patents.
US2264221A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Conditioning apparatus having means for controlling the temperature and relative humidity of air
Assignee: Motors Liquidation Co
•
Filing: 1937-03-31
•
Granted: 1941-11-25
•
Expires: 1957-03-31
Abstract
No abstract record available.
Inventors
- 👤 Harry F Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 08:42
CPC Classifications
F; F24; F24F; F24F3/00; F24F3/12; F24F3/14; F24F3/1411; F24F3/1423; F24F1/00; F24F1/02; F24F1/028; F24F1/0287; F24F1/032; F24F1/0323; F24F1/0325; F24F1/0328; F24F1/035; F24F1/0358; F24F2203/00; F24F2203/10; F24F2203/1004; F24F2203/1012; F24F2203/1016; F24F2203/1032; F24F2203/104; F24F2203/1068; F24F2203/1084; Y; Y10; Y10S; Y10S165/00; Y10S165/909
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1944-11-24 | 1945-05-26 | 1945-11-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1948-11-24 | 1949-05-26 | 1949-11-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1952-11-24 | 1953-05-26 | 1953-11-25 | $7700.00 | Window Closed / Lapsed |