Patent US2632435A successfully refreshed from Google Patents.
US2632435A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wall mounted fuel burning space heater
Assignee: Individual
•
Filing: 1947-06-28
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Granted: 1953-03-24
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Expires: 1967-06-28
Abstract
No abstract record available.
Inventors
- 👤 Allan W Lundstrum
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 17:07
CPC Classifications
F; F24; F24C; F24C3/00; F24C3/002; F24C3/004
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1790777A
Cited
US1574145A
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US1582657A
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US1695079A
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US1814076A
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US2087983A
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US2160264A
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US2160883A
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US2158643A
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US2192920A
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US2292180A
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US2422694A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-03-23 | 1956-09-22 | 1957-03-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-03-23 | 1960-09-22 | 1961-03-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-03-23 | 1964-09-22 | 1965-03-24 | $7700.00 | Window Closed / Lapsed |