US2465672A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Refractory composition and method of making
Assignee: Selas Corp of America
•
Filing: 1943-10-20
•
Granted: 1949-03-29
•
Expires: 1963-10-20
Abstract
No abstract record available.
Inventors
- 👤 Blaha Emil
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:50
CPC Classifications
C; C04; C04B; C04B35/00; C04B35/515; C04B35/56; C04B35/565; C01; C01B; C01B32/00; C01B32/90; C01B32/914; C01B32/956
Claims Analysis
Total Claims: 0
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CH205653A
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US2272038A
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US2314758A
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US2324119A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-03-28 | 1952-09-27 | 1953-03-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-03-28 | 1956-09-27 | 1957-03-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-03-28 | 1960-09-27 | 1961-03-29 | $7700.00 | Window Closed / Lapsed |