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US2873030A
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Assignee: Cuno Engineered Products Inc
•
Filing: 1954-05-04
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Granted: 1959-02-10
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Expires: 1974-05-04
Abstract
No abstract record available.
Inventors
- 👤 Philip E Ashton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 12:07
CPC Classifications
B; B01; B01D; B01D29/00; B01D29/44; B01D29/46
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB107090A
Cited
US1078674A
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FR415093A
Cited
US1976547A
Cited
GB480810A
Cited
GB486397A
Cited
DE725841C
Cited
US2453622A
Cited
US2547941A
Cited
US2601521A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-02-09 | 1962-08-11 | 1963-02-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-02-09 | 1966-08-11 | 1967-02-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-02-09 | 1970-08-11 | 1971-02-10 | $7700.00 | Window Closed / Lapsed |