US2995871A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bracing for industrial furnaces
Assignee: Dr C Otto and Co GmbH
•
Filing: 1957-11-05
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Granted: 1961-08-15
•
Expires: 1977-11-05
Abstract
No abstract record available.
Inventors
- 👤 Schuchert Wilhelm
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 06:00
CPC Classifications
F; F27; F27D; F27D1/00; F27D1/0003; F27D1/0023; C; C10; C10B; C10B29/00; C10B29/08; F23; F23M; F23M5/00; F23M5/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US722751A
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CH31207A
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US1018910A
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US2261397A
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US2386473A
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US2580812A
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US2641207A
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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) | 1964-08-14 | 1965-02-13 | 1965-08-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-08-14 | 1969-02-13 | 1969-08-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-08-14 | 1973-02-13 | 1973-08-15 | $7700.00 | Window Closed / Lapsed |