Patent US2741243A successfully refreshed from Google Patents.
US2741243A
Expired / Lapsed
US
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Blower unit and combined heater cabinet-blower unit
Assignee: Preway Inc
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Filing: 1951-09-28
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Granted: 1956-04-10
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Expires: 1971-09-28
Abstract
No abstract record available.
Inventors
- 👤 Kenneth S Jenson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 01:48
CPC Classifications
F; F24; F24H; F24H3/00; F24H3/02; F24H3/06; F24H3/065
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US690789A
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US1917029A
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US2175539A
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US2375920A
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US2253175A
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US2376172A
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US2479906A
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US2576685A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-04-10 | 1959-10-10 | 1960-04-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-04-10 | 1963-10-10 | 1964-04-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-04-10 | 1967-10-10 | 1968-04-10 | $7700.00 | Window Closed / Lapsed |