Patent US2697519A successfully refreshed from Google Patents.
US2697519A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ore separating machine
Assignee: Individual
•
Filing: 1951-11-05
•
Granted: 1954-12-21
•
Expires: 1971-11-05
Abstract
No abstract record available.
Inventors
- 👤 Austin B Nash
- 👤 Robert B Nash
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 18:31
CPC Classifications
B; B03; B03B; B03B5/00; B03B5/02; B03B5/08
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US142646A
Cited
US386030A
Cited
US853459A
Cited
US990954A
Cited
US1185129A
Cited
US1451567A
Cited
US1731660A
Cited
GB373439A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-12-20 | 1958-06-21 | 1958-12-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-12-20 | 1962-06-21 | 1962-12-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-12-20 | 1966-06-21 | 1966-12-21 | $7700.00 | Window Closed / Lapsed |