US1782531A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and means for filtering fluids
Assignee: Individual
•
Filing: 1928-09-27
•
Granted: 1930-11-25
•
Expires: 1948-09-27
Abstract
No abstract record available.
Inventors
- 👤 Anthony H G Fokker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:22
CPC Classifications
B; B01; B01D; B01D35/00; B01D35/02; B01D29/00; B01D29/11; B01D29/117; B01D29/88; B01D29/94; B01D2201/00; B01D2201/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1933-11-24 | 1934-05-26 | 1934-11-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1937-11-24 | 1938-05-26 | 1938-11-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1941-11-24 | 1942-05-26 | 1942-11-25 | $7700.00 | Window Closed / Lapsed |