Patent EP0336985A1 successfully refreshed from Google Patents.
Patent US3148964A successfully refreshed from Google Patents.
US3148964A
Expired / Lapsed
US
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Arrangement for humidifying air flowing through an air duct
Assignee: Individual
•
Filing: 1961-07-19
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Granted: 1964-09-15
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Expires: 1981-07-19
Abstract
No abstract record available.
Inventors
- 👤 Flury Karl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:26
CPC Classifications
F; F24; F24F; F24F6/00; F24F6/12; F24F6/16; F24F6/02; F24F6/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2028444A
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US2766027A
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US2860228A
Cited
US2874797A
Cited
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Cited
US2984464A
Cited
AT207992B
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-09-15 | 1968-03-16 | 1968-09-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-09-15 | 1972-03-16 | 1972-09-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-09-15 | 1976-03-16 | 1976-09-15 | $7700.00 | Window Closed / Lapsed |