US2589558A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stirrer
Assignee: Individual
•
Filing: 1949-07-13
•
Granted: 1952-03-18
•
Expires: 1969-07-13
Abstract
No abstract record available.
Inventors
- 👤 Lamoreaux Frank
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 19:09
CPC Classifications
B; B01; B01F; B01F27/00; B01F27/05; B01F27/11; B01F27/115; B01F27/1152
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US352991A
Cited
US436015A
Cited
US492475A
Cited
US1354489A
Cited
US1756236A
Cited
US2258830A
Cited
GB517797A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-03-18 | 1955-09-17 | 1956-03-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-03-18 | 1959-09-17 | 1960-03-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-03-18 | 1963-09-17 | 1964-03-18 | $7700.00 | Window Closed / Lapsed |