Patent US3350862A successfully refreshed from Google Patents.
US3350862A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Modular support frame and filter media assembly
Assignee: American Air Filter Co Inc
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Filing: 1965-07-22
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Granted: 1967-11-07
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Expires: 1985-07-22
Abstract
No abstract record available.
Inventors
- 👤 Nutting Arthur
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 22:06
CPC Classifications
F; F24; F24F; F24F13/00; F24F13/28; B; B01; B01D; B01D46/00; B01D46/0002; B01D46/0005; B01D46/10; B01D46/12; B01D2265/00; B01D2265/06; Y; Y10; Y10S; Y10S55/00; Y10S55/29
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
124 words
AN IMPROVED GAS FILTER STRUCTURE COMPRISING: A MODULAR OPEN-ENDED OUTER SUPPORTED FRAME INCLUDING SIDE WALLS HAVING EXTENDING IN A DIRECTION SUBSTANTIALLY NORMAL THEREFROM AN INWARDLY-TURNED PERIPHERAL LEDGE; AN OPEN-ENDED FILTER UNIT INCLUDING A FILTER MEDIA SUPPORTING BORDER FRAME HAVING SURROUNDING SIDE WALLS WITH FILTER MEDIA MEANS DISPOSED THEREIN, SAID BORDER FRAME BEING OF CORRESPONDING GEOMETRIC CONFIGURATION TO SAID OUTER SUPPORT FRAME AND SIZED TO BE DISPOSED WITHIN SAID OUTER SUPPORT FRAME SO THAT ONE EDGE FACE OF SAID BORDER FRAME SIDE WALLS ENGAGES IN FACED RELATION AGAINST SAID NORMALLY EXTENDING INWARDLY-TURNED PERIPHERAL LEDGE OF SAID OUTER SUPPORT FRAME; ROD SUSPENSION MEANS CONNECTED AT ONE END TO SAID OUTER SUPPORT FRAME AND HAVING CONNECTION MEANS AT ITS OPPOSITE END FOR MOUNTING TO A SUPERSTRUCTURE, SAID
Claim 2
Dependent Claim
124 words
AN IMPROVED GAS FILTER STRUCTURE COMPRISING: A MODULAR OPEN-ENDED OUTER SUPPORTED FRAME INCLUDING SIDE WALLS HAVING EXTENDING IN A DIRECTION SUBSTANTIALLY NORMAL THEREFROM AN INWARDLY-TURNED PERIPHERAL LEDGE; AN OPEN-ENDED FILTER UNIT INCLUDING A FILTER MEDIA SUPPORTING BORDER FRAME HAVING SURROUNDING SIDE WALLS WITH FILTER MEDIA MEANS DISPOSED THEREIN, SAID BORDER FRAME BEING OF CORRESPONDING GEOMETRIC CONFIGURATION TO SAID OUTER SUPPORT FRAME AND SIZED TO BE DISPOSED WITHIN SAID OUTER SUPPORT FRAME SO THAT ONE EDGE FACE OF SAID BORDER FRAME SIDE WALLS ENGAGES IN FACED RELATION AGAINST SAID NORMALLY EXTENDING INWARDLY-TURNED PERIPHERAL LEDGE OF SAID OUTER SUPPORT FRAME; ROD SUSPENSION MEANS CONNECTED AT ONE END TO SAID OUTER SUPPORT FRAME AND HAVING CONNECTION MEANS AT ITS OPPOSITE END FOR MOUNTING TO A SUPERSTRUCTURE, SAID
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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) | 1970-11-06 | 1971-05-08 | 1971-11-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-11-06 | 1975-05-08 | 1975-11-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-11-06 | 1979-05-08 | 1979-11-07 | $7700.00 | Window Closed / Lapsed |