Patent US2475113A successfully refreshed from Google Patents.
US2475113A
Expired / Lapsed
US
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Portable electric heater
Assignee: CHICAGO ELECTRIC MANUFACTURING Co
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Filing: 1948-01-20
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Granted: 1949-07-05
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Expires: 1968-01-20
Abstract
No abstract record available.
Inventors
- 👤 Harry L Stiles
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 22:03
CPC Classifications
F; F24; F24H; F24H3/00; F24H3/02; F24H3/04; F24H3/0405; F24H3/0411; F24H3/0417
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1908559A
Cited
US1998670A
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US1942758A
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US2015251A
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US2106700A
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US2274469A
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US2372832A
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US2445250A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-07-04 | 1953-01-03 | 1953-07-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-07-04 | 1957-01-03 | 1957-07-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-07-04 | 1961-01-03 | 1961-07-05 | $7700.00 | Window Closed / Lapsed |