US1621767A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Filter press
Assignee: CAPRA FILTER PRESS Corp
•
Filing: 1925-01-12
•
Granted: 1927-03-22
•
Expires: 1945-01-12
Abstract
No abstract record available.
Inventors
- 👤 Angelo M Capra
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 13:01
CPC Classifications
B; B01; B01D; B01D25/00; B01D25/12; B01D25/164; B01D25/1645; B01D25/172; B01D25/21; B01D25/215; B01D25/30; Y; Y10; Y10T; Y10T74/00; Y10T74/18; Y10T74/18056; Y10T74/1828
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1930-03-21 | 1930-09-20 | 1931-03-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1934-03-21 | 1934-09-20 | 1935-03-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1938-03-21 | 1938-09-20 | 1939-03-22 | $7700.00 | Window Closed / Lapsed |