US2652107A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cross lighter and removable port-forming grid
Assignee: Surface Combustion Corp
•
Filing: 1950-08-16
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Granted: 1953-09-15
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Expires: 1970-08-16
Abstract
No abstract record available.
Inventors
- 👤 George E Hughes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 16:00
CPC Classifications
F; F23; F23D; F23D14/00; F23D14/46; F23D14/48; F23D14/58; F23D14/583; F23D14/586; F23D14/02; F23D14/04; F23D14/10; F23D14/105
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1405214A
Cited
US2251710A
Cited
US2210069A
Cited
US2428274A
Cited
US2469499A
Cited
US2572445A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-09-14 | 1957-03-16 | 1957-09-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-09-14 | 1961-03-16 | 1961-09-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-09-14 | 1965-03-16 | 1965-09-15 | $7700.00 | Window Closed / Lapsed |