Patent US2263964A successfully refreshed from Google Patents.
US2263964A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Filtration apparatus
Assignee: Individual
•
Filing: 1940-06-24
•
Granted: 1941-11-25
•
Expires: 1960-06-24
Abstract
No abstract record available.
Inventors
- 👤 Thomas R Camp
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 07:06
CPC Classifications
B; B01; B01D; B01D24/00; B01D24/02; B01D24/20; B01D24/22; B01D2201/00; B01D2201/04; B01D2201/0415; B01D24/46; B01D24/4631
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) | 1944-11-24 | 1945-05-26 | 1945-11-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1948-11-24 | 1949-05-26 | 1949-11-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1952-11-24 | 1953-05-26 | 1953-11-25 | $7700.00 | Window Closed / Lapsed |