US2833008A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hot top for ingot molds
Assignee: Oglebay Norton Co
•
Filing: 1950-12-30
•
Granted: 1958-05-06
•
Expires: 1970-12-30
Abstract
No abstract record available.
Inventors
- 👤 Walter M Charman
- 👤 Benjamin F Anthony
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 04:15
CPC Classifications
B; B22; B22D; B22D7/00; B22D7/06; B22D7/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1665515A
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US1630612A
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US1778316A
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US1739222A
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US1969726A
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US2088288A
Cited
US2228545A
Cited
US2574815A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-05-05 | 1961-11-04 | 1962-05-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-05-05 | 1965-11-04 | 1966-05-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-05-05 | 1969-11-04 | 1970-05-06 | $7700.00 | Window Closed / Lapsed |