Patent US2529698A successfully refreshed from Google Patents.
US2529698A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Filter apparatus
Assignee: Individual
•
Filing: 1946-07-13
•
Granted: 1950-11-14
•
Expires: 1966-07-13
Abstract
No abstract record available.
Inventors
- 👤 Earl T Julius
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 09:12
CPC Classifications
B; B01; B01D; B01D24/00; B01D24/001; B01D24/02; B01D24/04; B01D24/08; B01D27/00; B01D27/02; B01D27/08; B01D35/00; B01D35/18
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US288622A
Cited
US1813122A
Cited
US2106863A
Cited
US2005751A
Cited
US1989598A
Cited
US2250299A
Cited
US2294330A
Cited
US2389555A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-11-13 | 1954-05-15 | 1954-11-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-11-13 | 1958-05-15 | 1958-11-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-11-13 | 1962-05-15 | 1962-11-14 | $7700.00 | Window Closed / Lapsed |