US2860225A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric heating apparatus
Assignee: Individual
•
Filing: 1956-10-23
•
Granted: 1958-11-11
•
Expires: 1976-10-23
Abstract
No abstract record available.
Inventors
- 👤 Steen Carl August
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 17:19
CPC Classifications
A; A47; A47J; A47J37/00; A47J37/06; A47J37/0623; A47J37/0629; A47J37/0635; A47J37/10; A47J37/101; A47J37/103; F; F24; F24C; F24C7/00; F24C7/04; F24C7/046
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1375801A
Cited
US1874836A
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DE635512C
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US2415768A
Cited
US2422950A
Cited
US2571782A
Cited
US2627014A
Cited
US2744995A
Cited
US2767297A
Cited
US2764664A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-11-10 | 1962-05-12 | 1962-11-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-11-10 | 1966-05-12 | 1966-11-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-11-10 | 1970-05-12 | 1970-11-11 | $7700.00 | Window Closed / Lapsed |