Patent EP0074260A2 successfully refreshed from Google Patents.
Patent US2963160A successfully refreshed from Google Patents.
US2963160A
Expired / Lapsed
US
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Means for producing filter layers on filter bands
Assignee: GEN ENGINEERING Co AB
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Filing: 1957-04-15
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Granted: 1960-12-06
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Expires: 1977-04-15
Abstract
No abstract record available.
Inventors
- 👤 Wennberg Olov Carl Gustav
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 19:21
CPC Classifications
B; B01; B01D; B01D33/00; B01D33/44; B01D33/46; B01D33/463; B01D33/04; B01D37/00; B01D37/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2534760A
Cited
US1946663A
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US2055869A
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US2102780A
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US2046845A
Cited
US2576288A
Cited
US2679936A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-12-06 | 1964-06-06 | 1964-12-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-12-06 | 1968-06-06 | 1968-12-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-12-06 | 1972-06-06 | 1972-12-06 | $7700.00 | Window Closed / Lapsed |