US2580404A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for controlling humidity
Assignee: Individual
•
Filing: 1946-03-14
•
Granted: 1952-01-01
•
Expires: 1966-03-14
Abstract
No abstract record available.
Inventors
- 👤 Burl H Bush
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 14:08
CPC Classifications
F; F24; F24F; F24F3/00; F24F3/12; F24F3/14; F24F2003/1458; F24F2203/00; F24F2203/10; F24F2203/1052
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1533053A
Cited
US1863656A
Cited
GB409652A
Cited
US2223586A
Cited
US2273350A
Cited
US2336456A
Cited
US2399246A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-12-31 | 1955-07-02 | 1956-01-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-12-31 | 1959-07-02 | 1960-01-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-12-31 | 1963-07-02 | 1964-01-01 | $7700.00 | Window Closed / Lapsed |