US2477796A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat-treating furnace
Assignee: Westinghouse Electric Corp
•
Filing: 1943-01-28
•
Granted: 1949-08-02
•
Expires: 1963-01-28
Abstract
No abstract record available.
Inventors
- 👤 James H Germany
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 21:29
CPC Classifications
F; F27; F27B; F27B5/00; F27B5/06; F27B5/16; C; C21; C21D; C21D1/00; C21D1/74; C21D1/767; C21D9/00; C21D9/70; F27B2005/062; F27B2005/068; F27B5/14; F27B2005/143; F27B2005/166; F27B2005/167; F27D; F27D21/00; F27D21/0014; F27D3/00; F27D3/16
Claims Analysis
Total Claims: 0
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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) | 1952-08-01 | 1953-01-31 | 1953-08-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-08-01 | 1957-01-31 | 1957-08-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-08-01 | 1961-01-31 | 1961-08-02 | $7700.00 | Window Closed / Lapsed |