Patent US2623168A successfully refreshed from Google Patents.
US2623168A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat control circuit
Assignee: Westinghouse Electric Corp
•
Filing: 1950-03-17
•
Granted: 1952-12-23
•
Expires: 1970-03-17
Abstract
No abstract record available.
Inventors
- 👤 Clarence B Stadum
- 👤 Edward C Hartwig
- 👤 William E Large
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 19:53
CPC Classifications
H; H05; H05B; H05B7/00; H05B7/02
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2361846A
Cited
US2415870A
Cited
US2415654A
Cited
US2406853A
Cited
US2421995A
Cited
US2409522A
Cited
US2463318A
Cited
US2438017A
Cited
US2516422A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-12-23 | 1956-06-23 | 1956-12-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-12-23 | 1960-06-23 | 1960-12-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-12-23 | 1964-06-23 | 1964-12-23 | $7700.00 | Window Closed / Lapsed |