US2754004A
Expired / Lapsed
US
⏱️ 0.0 years remaining
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Assignee: INTERNAZ SUPERFILTRI COMP
•
Filing: 1953-04-01
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Granted: 1956-07-10
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Expires: 1973-04-01
Abstract
No abstract record available.
Inventors
- 👤 D Urso Nicola
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 11:28
CPC Classifications
B; B01; B01D; B01D35/00; B01D35/18; B01D29/00; B01D29/39; B01D29/96; B01D35/12; B01D35/14; B01D35/143; B01D2201/00; B01D2201/30; B01D2201/309
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US928576A
Cited
US1015960A
Cited
US1244222A
Cited
US1282280A
Cited
US1377022A
Cited
US1965333A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-07-10 | 1960-01-09 | 1960-07-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-07-10 | 1964-01-09 | 1964-07-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-07-10 | 1968-01-09 | 1968-07-10 | $7700.00 | Window Closed / Lapsed |