US2485465A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Discharger for centrifugal separators
Assignee: American Tool & Machine Co
•
Filing: 1945-10-16
•
Granted: 1949-10-18
•
Expires: 1965-10-16
Abstract
No abstract record available.
Inventors
- 👤 John E Tholl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:54
CPC Classifications
B; B04; B04B; B04B11/00; B04B11/08
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US758634A
Cited
US1227107A
Cited
US1474331A
Cited
GB204937A
Cited
FR587634A
Cited
US1761593A
Cited
US1829249A
Cited
FR40790E
Cited
US2063472A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-10-17 | 1953-04-18 | 1953-10-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-10-17 | 1957-04-18 | 1957-10-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-10-17 | 1961-04-18 | 1961-10-18 | $7700.00 | Window Closed / Lapsed |