US3237387A
Expired / Lapsed
US
⏱️ 0.0 years remaining
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Assignee: Skuttle Manufacturing Co
•
Filing: 1960-04-20
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Granted: 1966-03-01
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Expires: 1980-04-20
Abstract
No abstract record available.
Inventors
- 👤 Edmond H Haugen
- 👤 Milton A Powers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 21:41
CPC Classifications
B; B01; B01D; B01D46/00; B01D46/10; Y; Y10; Y10S; Y10S55/00; Y10S55/31
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
67 words
A DRY WATERPROOF WASHABLE FILTER ASSEMBLY FOR REMOVING DUST FROM MOVING AIR AND OTHER GASES COMPRISING A MAT OF GLASS FIBERS SANDWICHED BETWEEN APERTURED SHEETS OF WATERPROOF SYNTHETIC POLYMER PLASTIC MATERIAL, A LATERALLY APERTURED BOX-LIKE FRAME COMPOSED OF RELATIVELY STIFF WATER RESISTANT NON-METICALLY MATERIAL ENCLOSING SAID SANDWICH, AND A RIGID SUBSTANTIALLY U-SHAPED METAL BORDER ASSEMBLY MOUNTED ON SAID FRAME AND ENCOMPASSING SAID FRAME ALL AROUND ITS PERIPHERY.
Claim 2
Dependent Claim
67 words
A DRY WATERPROOF WASHABLE FILTER ASSEMBLY FOR REMOVING DUST FROM MOVING AIR AND OTHER GASES COMPRISING A MAT OF GLASS FIBERS SANDWICHED BETWEEN APERTURED SHEETS OF WATERPROOF SYNTHETIC POLYMER PLASTIC MATERIAL, A LATERALLY APERTURED BOX-LIKE FRAME COMPOSED OF RELATIVELY STIFF WATER RESISTANT NON-METICALLY MATERIAL ENCLOSING SAID SANDWICH, AND A RIGID SUBSTANTIALLY U-SHAPED METAL BORDER ASSEMBLY MOUNTED ON SAID FRAME AND ENCOMPASSING SAID FRAME ALL AROUND ITS PERIPHERY.
References Cited (Backward Citations)
US2160003A
Cited
US2108283A
Cited
US2297601A
Cited
US2521984A
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US2557279A
Cited
US2597927A
Cited
US2723731A
Cited
US2715453A
Cited
US2784132A
Cited
GB747144A
Cited
US2789663A
Cited
US2877863A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-02-28 | 1969-08-30 | 1970-03-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-28 | 1973-08-30 | 1974-03-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-28 | 1977-08-30 | 1978-03-01 | $7700.00 | Window Closed / Lapsed |