US2418531A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ignition coil
Assignee: Bendix Aviation Corp
•
Filing: 1939-12-21
•
Granted: 1947-04-08
•
Expires: 1959-12-21
Abstract
No abstract record available.
Inventors
- 👤 Tognola Tullio
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:59
CPC Classifications
H; H01; H01F; H01F27/00; H01F27/28; H01F27/32; H01F27/324; H01F38/00; H01F38/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1629132A
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US1608891A
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US1725797A
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US1838077A
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US2159120A
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US2141331A
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US2017204A
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US1908798A
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US1943240A
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US1969866A
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US2028942A
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US2156487A
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US2266811A
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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) | 1950-04-07 | 1950-10-07 | 1951-04-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-04-07 | 1954-10-07 | 1955-04-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-04-07 | 1958-10-07 | 1959-04-08 | $7700.00 | Window Closed / Lapsed |