Patent US3506406A successfully refreshed from Google Patents.
US1763443A
Expired / Lapsed
US
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Electromagnetic ignition device
Assignee: SEVERINO TRISOGLIO
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Filing: 1928-01-23
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Granted: 1930-06-10
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Expires: 1948-01-23
Abstract
No abstract record available.
Inventors
- 👤 Righetto Ruggero
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:09
CPC Classifications
F; F24; F24B; F24B15/00; F24B15/005
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1933-06-09 | 1933-12-09 | 1934-06-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1937-06-09 | 1937-12-09 | 1938-06-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1941-06-09 | 1941-12-09 | 1942-06-10 | $7700.00 | Window Closed / Lapsed |