US3189336A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Metallurgical heating furnace
Assignee: Midland Ross Corp
•
Filing: 1962-11-15
•
Granted: 1965-06-15
•
Expires: 1982-11-15
Abstract
No abstract record available.
Inventors
- 👤 Montagino Joseph
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 10:08
CPC Classifications
C; C23; C23C; C23C8/00; C23C8/06; C21; C21D; C21D1/00; C21D1/74
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1851573A
Cited
US718257A
Cited
US2091172A
Cited
GB494910A
Cited
US2955062A
Cited
FR1108599A
Cited
US2872175A
Cited
US2953363A
Cited
US3086764A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-06-14 | 1968-12-14 | 1969-06-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-06-14 | 1972-12-14 | 1973-06-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-06-14 | 1976-12-14 | 1977-06-15 | $7700.00 | Window Closed / Lapsed |