US2878994A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Centrifuge tube and method of centrifuging
Assignee: OI Glass Inc
•
Filing: 1956-05-22
•
Granted: 1959-03-24
•
Expires: 1976-05-22
Abstract
No abstract record available.
Inventors
- 👤 Norman G Anderson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 06:40
CPC Classifications
B; B01; B01L; B01L3/00; B01L3/50; B01L3/502; B01L3/5021; B04; B04B; B04B5/00; B04B5/04; B04B5/0407; B04B7/00; B04B7/08; G; G10; G10K; G10K1/00; G10K1/06; G10K1/062; G10K1/063; G10K1/064; G10K1/0645; H; H03; H03J; H03J1/00; H03J1/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US911523A
Cited
US2198256A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-03-23 | 1962-09-22 | 1963-03-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-03-23 | 1966-09-22 | 1967-03-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-03-23 | 1970-09-22 | 1971-03-24 | $7700.00 | Window Closed / Lapsed |