Patent US2998504A successfully refreshed from Google Patents.
US2998504A
Expired / Lapsed
US
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Combined dehumidifier and humidifier
Assignee: Admiral Corp
•
Filing: 1958-08-04
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Granted: 1961-08-29
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Expires: 1978-08-04
Abstract
No abstract record available.
Inventors
- 👤 Evans T Morton
- 👤 Walter H Weinrich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 06:50
CPC Classifications
F; F24; F24F; F24F6/00; F24F6/02; F24F6/04; F24F3/00; F24F3/12; F24F3/14; F24F2003/144; F24F2003/1446
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2244180A
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US2626136A
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US1869623A
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US1953794A
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US2150224A
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US2022523A
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US2336011A
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US2365243A
Cited
US2630691A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-08-28 | 1965-02-27 | 1965-08-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-08-28 | 1969-02-27 | 1969-08-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-08-28 | 1973-02-27 | 1973-08-29 | $7700.00 | Window Closed / Lapsed |