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Patent US2725833A successfully refreshed from Google Patents.
US2725833A
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US
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Basic refractory support
Assignee: Individual
•
Filing: 1950-03-15
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Granted: 1955-12-06
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Expires: 1970-03-15
Abstract
No abstract record available.
Inventors
- 👤 George P Reintjes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 16:45
CPC Classifications
F; F27; F27D; F27D1/00; F27D1/0003; F27D1/004; F27D1/02; F27D1/021
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1106725A
Cited
US1593297A
Cited
US1928313A
Cited
US2216813A
Cited
US2289911A
Cited
US2476423A
Cited
US2480241A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-12-05 | 1959-06-06 | 1959-12-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-12-05 | 1963-06-06 | 1963-12-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-12-05 | 1967-06-06 | 1967-12-06 | $7700.00 | Window Closed / Lapsed |