US2947472A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Centrifuge apparatus
Assignee: Individual
•
Filing: 1944-09-20
•
Granted: 1960-08-02
•
Expires: 1964-09-20
Abstract
No abstract record available.
Inventors
- 👤 Skarstrom Charles
- 👤 Cohen Karl
- 👤 Harold C Urey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 16:15
CPC Classifications
B; B04; B04B; B04B5/00; B04B5/08; Y; Y10; Y10S; Y10S494/00; Y10S494/90
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1061656A
Cited
US1257235A
Cited
US1700928A
Cited
US1731313A
Cited
US1870113A
Cited
US2107035A
Cited
DE691386C
Cited
US2145544A
Cited
US2227837A
Cited
US2223999A
Cited
US2403089A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-08-02 | 1964-02-01 | 1964-08-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-08-02 | 1968-02-01 | 1968-08-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-08-02 | 1972-02-01 | 1972-08-02 | $7700.00 | Window Closed / Lapsed |