US2913239A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Furnaces for heat treatment of articles
Assignee: Individual
•
Filing: 1954-05-10
•
Granted: 1959-11-17
•
Expires: 1974-05-10
Abstract
No abstract record available.
Inventors
- 👤 Greene Ben
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:12
CPC Classifications
F; F27; F27D; F27D1/00; F27D1/0003; F27D1/0006; C; C21; C21D; C21D1/00; C21D1/74; F27B; F27B17/00; F27B17/0016; F27D1/18; F27D1/1808; F27D11/00; F27D11/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-11-16 | 1963-05-18 | 1963-11-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-11-16 | 1967-05-18 | 1967-11-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-11-16 | 1971-05-18 | 1971-11-17 | $7700.00 | Window Closed / Lapsed |