US2646782A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for controlling flame propagation in internal-combustion engines
Assignee: Individual
•
Filing: 1948-09-21
•
Granted: 1953-07-28
•
Expires: 1968-09-21
Abstract
No abstract record available.
Inventors
- 👤 Bernard C Fisher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 17:37
CPC Classifications
H; H01; H01T; H01T13/00; H01T13/02; H01T13/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1409400A
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US1218215A
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GB345528A
Cited
US1960344A
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US1963801A
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US2153598A
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US2459286A
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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) | 1956-07-27 | 1957-01-26 | 1957-07-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-07-27 | 1961-01-26 | 1961-07-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-07-27 | 1965-01-26 | 1965-07-28 | $7700.00 | Window Closed / Lapsed |