US2592896A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Eductor device
Assignee: Individual
•
Filing: 1949-02-10
•
Granted: 1952-04-15
•
Expires: 1969-02-10
Abstract
No abstract record available.
Inventors
- 👤 Stanley A Hayes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 22:19
CPC Classifications
A; A01; A01C; A01C23/00; A01C23/04; A01C23/042; B; B01; B01F; B01F25/00; B01F25/30; B01F25/31; B01F25/312; B01F25/3124; B01F25/31243; B01F25/316; B05; B05B; B05B7/00; B05B7/24; B05B7/2402; B05B7/244; B05B7/2443
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1519312A
Cited
US1986489A
Cited
US2083851A
Cited
US2107084A
Cited
US2271722A
Cited
US2381589A
Cited
US2343269A
Cited
US2541798A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-04-15 | 1955-10-15 | 1956-04-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-04-15 | 1959-10-15 | 1960-04-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-04-15 | 1963-10-15 | 1964-04-15 | $7700.00 | Window Closed / Lapsed |