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US2422809A
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Method of molding ceramic articles
Assignee: Stupakoff Ceramic & Manufacturing Co
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Filing: 1942-12-09
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Granted: 1947-06-24
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Expires: 1962-12-09
Abstract
No abstract record available.
Inventors
- 👤 Semon H Stupakoff
- 👤 Rawson E Stark
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 10:48
CPC Classifications
B; B28; B28B; B28B1/00; B28B1/24; Y; Y10; Y10S; Y10S264/00; Y10S264/78
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1374493A
Cited
US1977698A
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GB472110A
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US2122960A
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US2121018A
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GB489981A
Cited
US2304461A
Cited
GB699080A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-06-23 | 1950-12-23 | 1951-06-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-06-23 | 1954-12-23 | 1955-06-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-06-23 | 1958-12-23 | 1959-06-24 | $7700.00 | Window Closed / Lapsed |