US3084924A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Comolded magnesite-chromite tuyere
Assignee: General Refractories Co
•
Filing: 1960-06-30
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Granted: 1963-04-09
•
Expires: 1980-06-30
Abstract
No abstract record available.
Inventors
- 👤 Harry A Morlock
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 14:56
CPC Classifications
C; C22; C22B; C22B15/00; C22B15/0026; C22B15/0028; C22B15/003; C22B15/0041; C21; C21C; C21C5/00; C21C5/28; C21C5/42; C21C5/46; C21C5/48
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
CA492317A
Cited
US2125193A
Cited
US2230141A
Cited
US2268531A
Cited
DE829665C
Cited
US2580519A
Cited
US2791116A
Cited
US2818248A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-04-08 | 1966-10-08 | 1967-04-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-04-08 | 1970-10-08 | 1971-04-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-04-08 | 1974-10-08 | 1975-04-09 | $7700.00 | Window Closed / Lapsed |