US2470880A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sheet-metal gas burner
Assignee: ENAMELING Co
•
Filing: 1944-09-19
•
Granted: 1949-05-24
•
Expires: 1964-09-19
Abstract
No abstract record available.
Inventors
- 👤 George W Zimbelman
- 👤 Shelton Roy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 23:33
CPC Classifications
F; F23; F23D; F23D14/00; F23D14/02; F23D14/04; F23D14/10; F23D14/105; F23D14/46; F23D14/48; F23D14/58
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
NL31898C
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DE543548C
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US1919788A
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GB190104546A
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US1278037A
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US1347335A
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US1486668A
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DE509145C
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US1883897A
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US2041706A
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US2009271A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-05-23 | 1952-11-22 | 1953-05-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-05-23 | 1956-11-22 | 1957-05-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-05-23 | 1960-11-22 | 1961-05-24 | $7700.00 | Window Closed / Lapsed |