Patent US3076503A successfully refreshed from Google Patents.
Patent US2493387A successfully refreshed from Google Patents.
US2493387A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flow mixer
Assignee: —
•
Filing: —
•
Granted: 1950-01-03
•
Expires: 1967-01-03
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 09:20
CPC Classifications
F; F04; F04F; F04F5/00; F04F5/44; F04F5/46; F04F5/463
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US284962A
Cited
US1671464A
Cited
US1822992A
Cited
US1878478A
Cited
US2117944A
Cited
US2180259A
Cited
US2321483A
Cited
US2378839A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-01-02 | 1953-07-04 | 1954-01-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-01-02 | 1957-07-04 | 1958-01-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-01-02 | 1961-07-04 | 1962-01-03 | $7700.00 | Window Closed / Lapsed |