US3090179A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air filter and humidifier
Assignee: Individual
•
Filing: 1959-12-29
•
Granted: 1963-05-21
•
Expires: 1979-12-29
Abstract
No abstract record available.
Inventors
- 👤 William N Powell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 19:48
CPC Classifications
F; F02; F02M; F02M35/00; F02M35/02; F02M35/04; F02M25/00; F02M25/022; F02M25/0221; F02M25/0225; F02M25/025; F02M25/028; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
96 words
AN AIR FILTERING AND HUMIDIFYING DEVICE COMPRISING A VISCOUS FILTERING MEDIUM; A WATER-ABSORBENT FILTERING MEDIUM SPACED APART FROM SAID VISCOUS FILTERING MEDIUM; A HOUSING ENCLOSING SAID VISCOUS AND SAID WATER-ABSORBENT FILTERING MEDIA, SAID HOUSING HAVING AN INLET PORT AND CONVERGING TO AN EXIT DUCT NORMAL TO SAID MEDIA BUT OF LESSER DIMENSION THAN SAID MEDIA WHEN VIEWED IN FRONT ELEVATION, A LOUVERED BAFFLE DISPOSED WITHIN SAID HOUSING BETWEEN SAID MEDIA AND OF SUBSTANTIALLY THE SAME DIMENSION AS SAID MEDIA, THE SPACING OF THE LOUVERS OF SAID BAFFLE WHICH WHEN BAFFLE IS VIEWED IN FRONT ELEVATION OVERLIE
Claim 2
Dependent Claim
96 words
AN AIR FILTERING AND HUMIDIFYING DEVICE COMPRISING A VISCOUS FILTERING MEDIUM; A WATER-ABSORBENT FILTERING MEDIUM SPACED APART FROM SAID VISCOUS FILTERING MEDIUM; A HOUSING ENCLOSING SAID VISCOUS AND SAID WATER-ABSORBENT FILTERING MEDIA, SAID HOUSING HAVING AN INLET PORT AND CONVERGING TO AN EXIT DUCT NORMAL TO SAID MEDIA BUT OF LESSER DIMENSION THAN SAID MEDIA WHEN VIEWED IN FRONT ELEVATION, A LOUVERED BAFFLE DISPOSED WITHIN SAID HOUSING BETWEEN SAID MEDIA AND OF SUBSTANTIALLY THE SAME DIMENSION AS SAID MEDIA, THE SPACING OF THE LOUVERS OF SAID BAFFLE WHICH WHEN BAFFLE IS VIEWED IN FRONT ELEVATION OVERLIE
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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) | 1966-05-20 | 1966-11-19 | 1967-05-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-05-20 | 1970-11-19 | 1971-05-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-05-20 | 1974-11-19 | 1975-05-21 | $7700.00 | Window Closed / Lapsed |