US2795682A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric heaters
Assignee: BERKO ELECTRIC Manufacturing CORP
•
Filing: 1954-06-22
•
Granted: 1957-06-11
•
Expires: 1974-06-22
Abstract
No abstract record available.
Inventors
- 👤 Knoll David
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:40
CPC Classifications
F; F24; F24C; F24C7/00; F24C7/04; F24C7/043
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-06-10 | 1960-12-10 | 1961-06-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-06-10 | 1964-12-10 | 1965-06-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-06-10 | 1968-12-10 | 1969-06-11 | $7700.00 | Window Closed / Lapsed |