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Patent US2545561A successfully refreshed from Google Patents.
US2545561A
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Heating element for convection heaters
Assignee: Modine Manufacturing Co
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Filing: 1947-09-26
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Granted: 1951-03-20
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Expires: 1967-09-26
Abstract
No abstract record available.
Inventors
- 👤 Spieth Benjamin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 06:00
CPC Classifications
F; F28; F28F; F28F9/00; F28F9/007; F28F9/013; F28D; F28D1/00; F28D1/02; F28D1/04; F28D1/047
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1735807A
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US1764187A
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US1865511A
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US1940152A
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US2168549A
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US2331634A
Cited
US2438767A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-03-19 | 1954-09-18 | 1955-03-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-03-19 | 1958-09-18 | 1959-03-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-03-19 | 1962-09-18 | 1963-03-20 | $7700.00 | Window Closed / Lapsed |