US2522724A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric toaster heating unit
Assignee: Knapp Monarch Co
•
Filing: 1947-01-03
•
Granted: 1950-09-19
•
Expires: 1967-01-03
Abstract
No abstract record available.
Inventors
- 👤 Frank W Scharf
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 17:16
CPC Classifications
A; A47; A47J; A47J37/00; A47J37/06; A47J37/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1143578A
Cited
US1597304A
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US1753601A
Cited
GB333652A
Cited
US2061433A
Cited
US2012788A
Cited
US2197221A
Cited
US2383673A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-09-18 | 1954-03-20 | 1954-09-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-09-18 | 1958-03-20 | 1958-09-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-09-18 | 1962-03-20 | 1962-09-19 | $7700.00 | Window Closed / Lapsed |