US2718385A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stirring apparatus
Assignee: Ethyl Corp
•
Filing: 1952-12-23
•
Granted: 1955-09-20
•
Expires: 1972-12-23
Abstract
No abstract record available.
Inventors
- 👤 Julius L Greblick
- 👤 Ross D Stevenson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 15:04
CPC Classifications
B; B01; B01F; B01F27/00; B01F27/05; B01F27/11; B01F27/118; B01F27/80; B01F27/81
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-09-19 | 1959-03-21 | 1959-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-09-19 | 1963-03-21 | 1963-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-09-19 | 1967-03-21 | 1967-09-20 | $7700.00 | Window Closed / Lapsed |