Patent US2416472A successfully refreshed from Google Patents.
US2416472A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cast refractory products
Assignee: Saint Gobain Ceramics and Plastics Inc
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Filing: 1945-04-10
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Granted: 1947-02-25
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Expires: 1965-04-10
Abstract
No abstract record available.
Inventors
- 👤 Field Theodore Estes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 14:57
CPC Classifications
C; C04; C04B; C04B35/00; C04B35/01; C04B35/48; C04B35/484
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2271369A
Cited
US2271366A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-02-24 | 1950-08-26 | 1951-02-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-02-24 | 1954-08-26 | 1955-02-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-02-24 | 1958-08-26 | 1959-02-25 | $7700.00 | Window Closed / Lapsed |