US2873030A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Filter
Assignee: Cuno Engineered Products Inc
•
Filing: 1954-05-04
•
Granted: 1959-02-10
•
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 09:07
CPC Classifications
B; B01; B01D; B01D29/00; B01D29/44; B01D29/46
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
GB107090A
Cited
US1078674A
Cited
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 |