US2525287A
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Assignee: Cuno Engineered Products Inc
•
Filing: 1947-03-22
•
Granted: 1950-10-10
•
Expires: 1967-03-22
Abstract
No abstract record available.
Inventors
- 👤 Charles H Cuno
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 06:25
CPC Classifications
B; B01; B01D; B01D27/00; B01D27/02; B01D27/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB189702931A
Cited
US661373A
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US1710758A
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DE587615C
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US2110318A
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US2218339A
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US2339703A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-10-09 | 1954-04-10 | 1954-10-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-10-09 | 1958-04-10 | 1958-10-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-10-09 | 1962-04-10 | 1962-10-10 | $7700.00 | Window Closed / Lapsed |