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Patent US2804066A successfully refreshed from Google Patents.
US2804066A
Expired / Lapsed
US
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Window-supported hot air heater
Assignee: Coleman Co Inc
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Filing: 1953-06-16
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Granted: 1957-08-27
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Expires: 1973-06-16
Abstract
No abstract record available.
Inventors
- 👤 John E Mccutchen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 12:20
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)
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US941370A
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GB191021723A
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US1757905A
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US2044761A
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US2094729A
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US2156101A
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US2538382A
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US2473562A
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US2582066A
Cited
US2530486A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-08-26 | 1961-02-25 | 1961-08-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-08-26 | 1965-02-25 | 1965-08-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-08-26 | 1969-02-25 | 1969-08-27 | $7700.00 | Window Closed / Lapsed |