US2715965A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressure filter
Assignee: FRED S CARVER Inc
•
Filing: 1950-10-04
•
Granted: 1955-08-23
•
Expires: 1970-10-04
Abstract
No abstract record available.
Inventors
- 👤 Fred S Carver
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 05:10
CPC Classifications
B; B30; B30B; B30B9/00; B30B9/02; B30B9/26
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US667005A
Cited
US1771526A
Cited
US1767078A
Cited
US1801933A
Cited
US1971972A
Cited
US1977480A
Cited
US2072942A
Cited
US2178416A
Cited
US2247988A
Cited
US2472012A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-08-22 | 1959-02-21 | 1959-08-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-08-22 | 1963-02-21 | 1963-08-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-08-22 | 1967-02-21 | 1967-08-23 | $7700.00 | Window Closed / Lapsed |