US2426612A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Combined cracking and coking broad oven of the recuperator type
Assignee: Hughes By-Product Coke Oven Corp
•
Filing: 1945-06-01
•
Granted: 1947-09-02
•
Expires: 1965-06-01
Abstract
No abstract record available.
Inventors
- 👤 Charles H Hughes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 13:16
CPC Classifications
C; C10; C10B; C10B15/00; C10B15/02; C10G; C10G9/00; C10G9/14; C10G9/18; C10G9/20; Y; Y02; Y02P; Y02P20/00; Y02P20/10; Y02P20/129
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1885920A
Cited
US1907029A
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US2116641A
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US2199841A
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US2234173A
Cited
US2259380A
Cited
US2267447A
Cited
US2347076A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-09-01 | 1951-03-03 | 1951-09-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-09-01 | 1955-03-03 | 1955-09-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-09-01 | 1959-03-03 | 1959-09-02 | $7700.00 | Window Closed / Lapsed |