US2601905A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dehumidification system for buildings
Assignee: John B. Pierce Laboratory
•
Filing: 1948-03-02
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Granted: 1952-07-01
•
Expires: 1968-03-02
Abstract
No abstract record available.
Inventors
- 👤 Frederick O Anderegg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:20
CPC Classifications
F; F24; F24F; F24F3/00; F24F3/12; F24F3/14; F24S; F24S10/00; F24S10/50; F24S10/55; F24S20/00; F24S20/60; F24S20/67; Y; Y02; Y02B; Y02B10/00; Y02B10/20; Y02E; Y02E10/00; Y02E10/40; Y02E10/44; Y10; Y10S; Y10S126/00; Y10S126/907; Y10S165/00; Y10S165/904
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2138691A
Cited
US1830412A
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US1966034A
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GB409652A
Cited
US2185760A
Cited
US2138690A
Cited
US2223586A
Cited
US2336456A
Cited
US2462952A
Cited
US2478617A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-07-01 | 1955-12-31 | 1956-07-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-07-01 | 1959-12-31 | 1960-07-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-07-01 | 1963-12-31 | 1964-07-01 | $7700.00 | Window Closed / Lapsed |