US2480809A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrically heated steam radiator
Assignee: Individual
•
Filing: 1945-05-05
•
Granted: 1949-08-30
•
Expires: 1965-05-05
Abstract
No abstract record available.
Inventors
- 👤 Freyman Jay
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 12:10
CPC Classifications
F; F24; F24H; F24H3/00; F24H3/002; F24H3/004; F24H3/006
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1158723A
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US1355867A
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US1409647A
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US1462703A
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US1437119A
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US1499192A
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US1528495A
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US1619865A
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US1680104A
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US1909593A
Cited
US1945139A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-08-29 | 1953-02-28 | 1953-08-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-08-29 | 1957-02-28 | 1957-08-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-08-29 | 1961-02-28 | 1961-08-30 | $7700.00 | Window Closed / Lapsed |