US2950819A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gyratory separator
Assignee: State Steel Products Inc
•
Filing: 1956-06-18
•
Granted: 1960-08-30
•
Expires: 1976-06-18
Abstract
No abstract record available.
Inventors
- 👤 Lee B Holman
- 👤 William T Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 06:40
CPC Classifications
B; B07; B07B; B07B1/00; B07B1/28; B07B1/38
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1354319A
Cited
US2008296A
Cited
US2159549A
Cited
US2194721A
Cited
US2191923A
Cited
DE913125C
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-08-30 | 1964-02-29 | 1964-08-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-08-30 | 1968-02-29 | 1968-08-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-08-30 | 1972-02-29 | 1972-08-30 | $7700.00 | Window Closed / Lapsed |