Patent US3171401A successfully refreshed from Google Patents.
US3171401A
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Humidifier
Assignee: MCDUFFEE BROS Inc
•
Filing: 1963-01-14
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Granted: 1965-03-02
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Expires: 1983-01-14
Abstract
No abstract record available.
Inventors
- 👤 Robert W Mcduffee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 21:29
CPC Classifications
F; F24; F24F; F24F6/00; F24F6/02; F24F6/04; Y; Y10; Y10S; Y10S261/00; Y10S261/15; Y10S261/34; Y10S261/44; Y10S261/46
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
147 words
A HUMIDIFIER APPARATUS ADAPTED FOR USE WITH A FURNACE SYSTEM WHICH INCLUDES MEANS TO CIRCULATE HEATED AIR, SAID HUMIDIFIER APPARATUS COMPRISING A HOUSING ADAPTED FOR ATTACHMENT TO THE FURNACE SYSTEM, AN INLET IN SAID HOUSING FOR ADMISSION OF DRY AIR INTO THE INTERIOR THEREOF, AN OUTLET IN SAID HOUSING FOR DISCHARGE OF HUMIDIFIED AIR, SUPPORT MEANS INCLUDING A PAIR OF GENERALLY CHANNEL-SHAPED INSERTS ATTACHED TO OPPOSITE INTERIOR WALLS OF SAID HOUSING, AN EVAPORATING FILTER ELEMENT RETAINED BY SAID CHANNEL-SHAPED INSERTS IN POSITION BETWEEN SAID DRY AIR INLET AND HUMIDIFIED AIR DISCHARGE OUTLET, A WATER DISTRUBUTION PAN SUPPORTED BY THE UPPER ENDS OF SAID CHANNEL-SHAPED INSERTS ELEMENTS OF SAID SUPPORT MEANS EVAPORATING FILTER ELEMENT FOR DELIVERY OF WATER THERETO AND MEANS FOR SUPPLYING WATER TO SAID WATER DISTRIBUTION PAN, THE CHANNEL-SHAPED INSERTS OF SAID SUPPORT MEANS BEING INDIVIDUALLY VERTICALLY ADJUSTABLE TO ENABLE LEVELING OF SAID WATER DISTRIBUTION PAN.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-03-01 | 1968-08-31 | 1969-03-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-03-01 | 1972-08-31 | 1973-03-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-03-01 | 1976-08-31 | 1977-03-02 | $7700.00 | Window Closed / Lapsed |