US2824500A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Refining machine
Assignee: E D JONES AND SONS Co
•
Filing: 1955-07-19
•
Granted: 1958-02-25
•
Expires: 1975-07-19
Abstract
No abstract record available.
Inventors
- 👤 Jr Edward H Cumpston
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 09:16
CPC Classifications
D; D21; D21D; D21D1/00; D21D1/20; D21D1/32
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US489079A
Cited
AT2001B
Cited
US1187932A
Cited
US1225874A
Cited
US1922313A
Cited
US2182391A
Cited
US2527772A
Cited
US2693738A
Cited
US2722163A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-02-24 | 1961-08-26 | 1962-02-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-02-24 | 1965-08-26 | 1966-02-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-02-24 | 1969-08-26 | 1970-02-25 | $7700.00 | Window Closed / Lapsed |