US2660050A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sectionally supported furnace wall
Assignee: MH Detrick Co
•
Filing: 1947-11-24
•
Granted: 1953-11-24
•
Expires: 1967-11-24
Abstract
No abstract record available.
Inventors
- 👤 Louis H Hosbein
- 👤 Ellman Louis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 13:41
CPC Classifications
F; F27; F27D; F27D1/00; F27D1/0003; F27D1/004
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1463045A
Cited
US1586859A
Cited
US1692134A
Cited
US1847436A
Cited
US2129328A
Cited
US2007038A
Cited
US2235740A
Cited
US2328907A
Cited
US2341971A
Cited
US2255803A
Cited
US2387663A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-11-23 | 1957-05-25 | 1957-11-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-11-23 | 1961-05-25 | 1961-11-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-11-23 | 1965-05-25 | 1965-11-24 | $7700.00 | Window Closed / Lapsed |