US2424438A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Protective system for electric blankets
Assignee: General Electric Co
•
Filing: 1944-11-01
•
Granted: 1947-07-22
•
Expires: 1964-11-01
Abstract
No abstract record available.
Inventors
- 👤 John W Downie
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 11:15
CPC Classifications
H; H05; H05B; H05B3/00; H05B3/20; H05B3/34; H05B3/342; H05B2203/00; H05B2203/002; H05B2203/003
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US836282A
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US1661354A
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US1758546A
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US2114152A
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US2195958A
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US2185051A
Cited
US2206436A
Cited
US2260715A
Cited
US2317189A
Cited
US2359254A
Cited
US2403803A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-07-21 | 1951-01-20 | 1951-07-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-07-21 | 1955-01-20 | 1955-07-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-07-21 | 1959-01-20 | 1959-07-22 | $7700.00 | Window Closed / Lapsed |