US2618322A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flashback-proof gas burner
Assignee: Airco Inc
•
Filing: 1949-03-19
•
Granted: 1952-11-18
•
Expires: 1969-03-19
Abstract
No abstract record available.
Inventors
- 👤 Lewis D Conta
- 👤 Teti John
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 12:51
CPC Classifications
F; F23; F23D; F23D14/00; F23D14/46; F23D14/72; F23D14/82
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1319097A
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US1299535A
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US2052871A
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US2109252A
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US2249338A
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US2242471A
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US2348839A
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US2442437A
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US2483742A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-11-18 | 1956-05-19 | 1956-11-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-11-18 | 1960-05-19 | 1960-11-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-11-18 | 1964-05-19 | 1964-11-18 | $7700.00 | Window Closed / Lapsed |