US2427945A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric hot plate with vesseltemperature control
Assignee: Westinghouse Electric Corp
•
Filing: 1942-12-05
•
Granted: 1947-09-23
•
Expires: 1962-12-05
Abstract
No abstract record available.
Inventors
- 👤 Earl K Clark
- 👤 Bletz Edward
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 00:45
CPC Classifications
F; F24; F24C; F24C15/00; F24C15/10; F24C15/102; F24C15/105
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2044397A
Cited
US2140479A
Cited
US2239540A
Cited
US2128807A
Cited
US2221870A
Cited
US2300551A
Cited
US2347707A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-09-22 | 1951-03-24 | 1951-09-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-09-22 | 1955-03-24 | 1955-09-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-09-22 | 1959-03-24 | 1959-09-23 | $7700.00 | Window Closed / Lapsed |