Patent US3418401A successfully refreshed from Google Patents.
US3418401A
Expired / Lapsed
US
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Method of slip casting basic refractory materials
Assignee: Dresser Industries Inc
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Filing: 1966-05-02
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Granted: 1968-12-24
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Expires: 1986-05-02
Abstract
No abstract record available.
Inventors
- 👤 George R Henry
- 👤 Jr Eldon D Miller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 19:40
CPC Classifications
C; C04; C04B; C04B35/00; C04B35/01; C04B35/03; C04B35/04; C04B35/043; C04B35/047; C04B35/0473
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3189668A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-12-24 | 1972-06-24 | 1972-12-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-12-24 | 1976-06-24 | 1976-12-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-12-24 | 1980-06-24 | 1980-12-24 | $7700.00 | Window Closed / Lapsed |