Patent US3091823A successfully refreshed from Google Patents.
US3091823A
Expired / Lapsed
US
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Stopper for a ladle or similar receptacle
Assignee: Vesuvius Crucible Co
•
Filing: 1960-06-22
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Granted: 1963-06-04
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Expires: 1980-06-22
Abstract
No abstract record available.
Inventors
- 👤 Crawford B Murton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 21:53
CPC Classifications
B; B22; B22D; B22D41/00; B22D41/14; B22D41/16; B22D41/18; Y; Y10; Y10T; Y10T403/00; Y10T403/66
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US117918A
Cited
GB190412291A
Cited
US925687A
Cited
US1083463A
Cited
US1281284A
Cited
US1373206A
Cited
US1631250A
Cited
US2296059A
Cited
US2788498A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-06-03 | 1966-12-03 | 1967-06-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-06-03 | 1970-12-03 | 1971-06-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-06-03 | 1974-12-03 | 1975-06-04 | $7700.00 | Window Closed / Lapsed |