US3413385A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for repairing refractory walls
Assignee: Republic Steel Corp
•
Filing: 1965-10-13
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Granted: 1968-11-26
•
Expires: 1985-10-13
Abstract
No abstract record available.
Inventors
- 👤 Komac Thomas
- 👤 Edward J Spirko
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 11:12
CPC Classifications
F; F27; F27D; F27D1/00; F27D1/16; F27D1/1636; F27D1/1642; C; C10; C10B; C10B29/00; C10B29/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3285758A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-11-26 | 1972-05-27 | 1972-11-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-11-26 | 1976-05-27 | 1976-11-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-11-26 | 1980-05-27 | 1980-11-26 | $7700.00 | Window Closed / Lapsed |