US2445457A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pot furnace
Assignee: Westinghouse Electric Corp
•
Filing: 1945-04-21
•
Granted: 1948-07-20
•
Expires: 1965-04-21
Abstract
No abstract record available.
Inventors
- 👤 Roth Willard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 01:12
CPC Classifications
F; F27; F27B; F27B14/00
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1415989A
Cited
US1377092A
Cited
US1697486A
Cited
US1686010A
Cited
US1705714A
Cited
US1854374A
Cited
US1845497A
Cited
US2007605A
Cited
US2207669A
Cited
US2294034A
Cited
US2247826A
Cited
US2260961A
Cited
US2404060A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-07-20 | 1952-01-19 | 1952-07-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-07-20 | 1956-01-19 | 1956-07-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-07-20 | 1960-01-19 | 1960-07-20 | $7700.00 | Window Closed / Lapsed |