US1693400A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Furnace wall and brick therefor
Assignee: BERNITZ FURNACE APPLIANCE Co
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Filing: 1925-07-16
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Granted: 1928-11-27
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Expires: 1945-07-16
Abstract
No abstract record available.
Inventors
- 👤 Nygaard Oscar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 18:23
CPC Classifications
F; F23; F23M; F23M5/00; F23M5/08; F23M5/085
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1931-11-27 | 1932-05-28 | 1932-11-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1935-11-27 | 1936-05-28 | 1936-11-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1939-11-27 | 1940-05-28 | 1940-11-27 | $7700.00 | Window Closed / Lapsed |