Patent US5116338A successfully refreshed from Google Patents.
US2560184A
Expired / Lapsed
US
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Gas-fired conversion burner
Assignee: NORMAN PRODUCTS Co
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Filing: 1948-08-25
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Granted: 1951-07-10
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Expires: 1968-08-25
Abstract
No abstract record available.
Inventors
- 👤 Jr Edward A Norman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 21:50
CPC Classifications
F; F23; F23C; F23C5/00; F23C5/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1911177A
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US1971269A
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US2136449A
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US2178703A
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US2183836A
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US2251710A
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US2465712A
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US2467626A
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US2485058A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-07-09 | 1955-01-08 | 1955-07-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-07-09 | 1959-01-08 | 1959-07-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-07-09 | 1963-01-08 | 1963-07-10 | $7700.00 | Window Closed / Lapsed |