US2585132A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air conditioner and humidifier
Assignee: Individual
•
Filing: 1949-09-29
•
Granted: 1952-02-12
•
Expires: 1969-09-29
Abstract
No abstract record available.
Inventors
- 👤 Charles J Kalmadge
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 19:00
CPC Classifications
F; F24; F24F; F24F6/00; F24F6/02; F24F6/025; Y; Y10; Y10S; Y10S261/00; Y10S261/34
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-02-11 | 1955-08-13 | 1956-02-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-02-11 | 1959-08-13 | 1960-02-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-02-11 | 1963-08-13 | 1964-02-12 | $7700.00 | Window Closed / Lapsed |