US2043313A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Centrifuging apparatus
Assignee: Individual
•
Filing: 1932-10-22
•
Granted: 1936-06-09
•
Expires: 1952-10-22
Abstract
No abstract record available.
Inventors
- 👤 William F Wells
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 03:06
CPC Classifications
B; B04; B04B; B04B5/00; B04B5/04; B04B5/0407; B04B5/0442; C; C12; C12M; C12M25/00; C12M25/02; C12M41/00; C12M41/30; C12M41/36; B04B7/00; B04B2007/005
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1939-06-09 | 1939-12-09 | 1940-06-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1943-06-09 | 1943-12-09 | 1944-06-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1947-06-09 | 1947-12-09 | 1948-06-09 | $7700.00 | Window Closed / Lapsed |