US2676006A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Continuous furnace for converting material
Assignee: Individual
•
Filing: 1951-01-10
•
Granted: 1954-04-20
•
Expires: 1971-01-10
Abstract
No abstract record available.
Inventors
- 👤 Warren S Martin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 10:25
CPC Classifications
F; F27; F27B; F27B9/00; F27B9/14; F27B9/16; F27B9/18; C; C10; C10B; C10B7/00; C10B7/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US624633A
Cited
US655418A
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US1465417A
Cited
US1674919A
Cited
DE600554C
Cited
US2332387A
Cited
US2472497A
Cited
US2471882A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-04-19 | 1957-10-19 | 1958-04-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-04-19 | 1961-10-19 | 1962-04-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-04-19 | 1965-10-19 | 1966-04-20 | $7700.00 | Window Closed / Lapsed |