US2869856A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Furnaces
Assignee: Individual
•
Filing: 1955-08-30
•
Granted: 1959-01-20
•
Expires: 1975-08-30
Abstract
No abstract record available.
Inventors
- 👤 Greene Ben
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 03:47
CPC Classifications
F; F27; F27D; F27D99/00; F27D99/0073; C; C21; C21D; C21D1/00; C21D1/74; F27B; F27B11/00; F27B17/00; F27B17/0016; F27B17/0033
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1699784A
Cited
US1694684A
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US1838015A
Cited
US1697144A
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US1876960A
Cited
US1869025A
Cited
US1959215A
Cited
US1994629A
Cited
US2081990A
Cited
US2228088A
Cited
US2477796A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-01-19 | 1962-07-21 | 1963-01-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-01-19 | 1966-07-21 | 1967-01-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-01-19 | 1970-07-21 | 1971-01-20 | $7700.00 | Window Closed / Lapsed |