US2948400A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Filtering apparatus
Assignee: Saul and Co
•
Filing: 1956-08-27
•
Granted: 1960-08-09
•
Expires: 1976-08-27
Abstract
No abstract record available.
Inventors
- 👤 Hagen Joseph
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 20:14
CPC Classifications
C; C02; C02F; C02F1/00; C02F1/52; C02F1/5281; B; B01; B01D; B01D21/00; B01D21/0012; B01D21/003; B01D21/10; B01D21/16; B01D21/24; B01D21/2405; B01D21/2416; B01D21/245; B01D21/30; B01D21/34
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1149750A
Cited
US1398285A
Cited
US1898812A
Cited
US2147422A
Cited
US2364775A
Cited
US2588863A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-08-09 | 1964-02-08 | 1964-08-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-08-09 | 1968-02-08 | 1968-08-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-08-09 | 1972-02-08 | 1972-08-09 | $7700.00 | Window Closed / Lapsed |