US2588339A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dehumidifying system
Assignee: John B. Pierce Laboratory
•
Filing: 1948-04-29
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Granted: 1952-03-11
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Expires: 1968-04-29
Abstract
No abstract record available.
Inventors
- 👤 Frederick O Anderegg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 04:46
CPC Classifications
F; F25; F25D; F25D17/00; F25D17/04; F25D17/042; F25D2317/00; F25D2317/04; F25D2317/041; F25D2317/0411; Y; Y10; Y10S; Y10S165/00; Y10S165/907
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) | 1955-03-11 | 1955-09-10 | 1956-03-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-03-11 | 1959-09-10 | 1960-03-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-03-11 | 1963-09-10 | 1964-03-11 | $7700.00 | Window Closed / Lapsed |