Patent US2575101A successfully refreshed from Google Patents.
US2575101A
Expired / Lapsed
US
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Dual band gas burner with crossover burner grid
Assignee: ENSIGN RIBBON BURNERS Inc
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Filing: 1948-02-19
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Granted: 1951-11-13
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Expires: 1968-02-19
Abstract
No abstract record available.
Inventors
- 👤 William B Ensign
- 👤 Wildermann Otto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 13:47
CPC Classifications
F; F23; F23D; F23D14/00; F23D14/46; F23D14/48; F23D14/58; F23D14/583; F23D14/586
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US832879A
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US1571636A
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US2210069A
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US2235635A
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US2348011A
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US2428271A
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US2443101A
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US2491430A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-11-12 | 1955-05-14 | 1955-11-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-11-12 | 1959-05-14 | 1959-11-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-11-12 | 1963-05-14 | 1963-11-13 | $7700.00 | Window Closed / Lapsed |