US2260242A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Furnace block, arch, and wall
Assignee: BEL RAY Inc
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Filing: 1937-12-30
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Granted: 1941-10-21
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Expires: 1957-12-30
Abstract
No abstract record available.
Inventors
- 👤 Ray W Bell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 10:09
CPC Classifications
F; F27; F27D; F27D1/00; F27D1/0003; F27D1/004; F23; F23L; F23L9/00; 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) | 1944-10-20 | 1945-04-21 | 1945-10-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1948-10-20 | 1949-04-21 | 1949-10-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1952-10-20 | 1953-04-21 | 1953-10-21 | $7700.00 | Window Closed / Lapsed |