US2678131A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dry concentrator
Assignee: Individual
•
Filing: 1950-07-17
•
Granted: 1954-05-11
•
Expires: 1970-07-17
Abstract
No abstract record available.
Inventors
- 👤 Robert F Dore
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 15:58
CPC Classifications
B; B03; B03B; B03B4/00; B03B4/02
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US347867A
Cited
US359498A
Cited
US372741A
Cited
US123974A
Cited
US1098979A
Cited
US1068163A
Cited
US1945526A
Cited
US1918343A
Cited
US2086584A
Cited
US2101295A
Cited
US2245942A
Cited
US2075747A
Cited
US2154784A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-05-10 | 1957-11-09 | 1958-05-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-05-10 | 1961-11-09 | 1962-05-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-05-10 | 1965-11-09 | 1966-05-11 | $7700.00 | Window Closed / Lapsed |