Patent US3839028A successfully refreshed from Google Patents.
Patent US1416218A successfully refreshed from Google Patents.
US1416218A
Expired / Lapsed
US
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Apparatus for dehumidifying air
Assignee: W L Fleisher & Co Inc
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Filing: 1920-05-03
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Granted: 1922-05-16
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Expires: 1940-05-03
Abstract
No abstract record available.
Inventors
- 👤 Adolph W Lissauer
- 👤 Robert E Keyes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 10:10
CPC Classifications
F; F24; F24F; F24F3/00; F24F3/12; F24F3/14; F24F3/153; F24F6/00; F24F6/12; F24F6/14; F24F2006/146; Y; Y10; Y10S; Y10S261/00; Y10S261/34
Claims Analysis
Total Claims: 0
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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) | 1925-05-15 | 1925-11-14 | 1926-05-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1929-05-15 | 1929-11-14 | 1930-05-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1933-05-15 | 1933-11-14 | 1934-05-16 | $7700.00 | Window Closed / Lapsed |