Patent US3706134A successfully refreshed from Google Patents.
Patent US2464165A successfully refreshed from Google Patents.
US2464165A
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US
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Portable heating apparatus
Assignee: Stewart Warner Corp
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Filing: 1942-08-24
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Granted: 1949-03-08
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Expires: 1962-08-24
Abstract
No abstract record available.
Inventors
- 👤 Jr Lynn A Williams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 05:47
CPC Classifications
F; F02; F02N; F02N19/00; F02N19/02; F23; F23D; F23D11/00; F23D11/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US601135A
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US864062A
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US884888A
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US1669614A
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US1629921A
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US1700142A
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US1988334A
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US1862114A
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US2110209A
Cited
US2286855A
Cited
US2295177A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-03-07 | 1952-09-06 | 1953-03-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-03-07 | 1956-09-06 | 1957-03-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-03-07 | 1960-09-06 | 1961-03-08 | $7700.00 | Window Closed / Lapsed |