Patent US2675455A successfully refreshed from Google Patents.
US2675455A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Control system for electric cooking ovens
Assignee: Hart Manufacturing Co
•
Filing: 1950-09-14
•
Granted: 1954-04-13
•
Expires: 1970-09-14
Abstract
No abstract record available.
Inventors
- 👤 Douglas W Richardson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 14:38
CPC Classifications
H; H05; H05B; H05B1/00; H05B1/02; H05B1/0202; H05B1/0208
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1960179A
Cited
US2177281A
Cited
US2201584A
Cited
US2203236A
Cited
US2203224A
Cited
US2295298A
Cited
US2402354A
Cited
US2218778A
Cited
US2442900A
Cited
US2402787A
Cited
US2388839A
Cited
US2483831A
Cited
US2541314A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-04-12 | 1957-10-12 | 1958-04-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-04-12 | 1961-10-12 | 1962-04-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-04-12 | 1965-10-12 | 1966-04-13 | $7700.00 | Window Closed / Lapsed |