US2844365A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Furnace for neutral heating of metal with neutral preheat
Assignee: Metallurgical Processes Co
•
Filing: 1954-04-09
•
Granted: 1958-07-22
•
Expires: 1974-04-09
Abstract
No abstract record available.
Inventors
- 👤 Frank A Rusciano
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 23:46
CPC Classifications
F; F27; F27B; F27B9/00; F27B9/30; F27B9/3005; F27B9/04; F27B9/045; F27B9/14; F27B9/147; F27B9/20; F27B9/22; F27B9/227
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
DE167413C
Cited
US1406424A
Cited
US2078747A
Cited
US2160610A
Cited
US2233474A
Cited
US2499704A
Cited
US2499624A
Cited
US2620174A
Cited
FR987233A
Cited
US2763476A
Cited
US2759863A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-07-21 | 1962-01-20 | 1962-07-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-07-21 | 1966-01-20 | 1966-07-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-07-21 | 1970-01-20 | 1970-07-22 | $7700.00 | Window Closed / Lapsed |