US2423912A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Induction furnace
Assignee: Ajax Engineering Corp
•
Filing: 1945-12-05
•
Granted: 1947-07-15
•
Expires: 1965-12-05
Abstract
No abstract record available.
Inventors
- 👤 Tama Manuel
- 👤 Tama Mario
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 10:18
CPC Classifications
F; F27; F27B; F27B14/00; F27B14/06; F27B14/061; F27B14/065
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USRE18362E
Cited
US875801A
Cited
US1201671A
Cited
US1479582A
Cited
US1640826A
Cited
US1589266A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-07-14 | 1951-01-13 | 1951-07-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-07-14 | 1955-01-13 | 1955-07-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-07-14 | 1959-01-13 | 1959-07-15 | $7700.00 | Window Closed / Lapsed |