US3396935A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Metal ingot mold with protective coating
Assignee: ChampionX LLC
•
Filing: 1967-08-10
•
Granted: 1968-08-13
•
Expires: 1987-08-10
Abstract
No abstract record available.
Inventors
- 👤 William T Snyder
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:44
CPC Classifications
B; B22; B22C; B22C3/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2701902A
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US2806270A
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US2842444A
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US3059296A
Cited
US3035318A
Cited
US3209421A
Cited
US3234607A
Cited
US3303030A
Cited
US3184813A
Cited
US3184815A
Cited
US3314117A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-08-13 | 1972-02-12 | 1972-08-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-08-13 | 1976-02-12 | 1976-08-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-08-13 | 1980-02-12 | 1980-08-13 | $7700.00 | Window Closed / Lapsed |