Patent US2790020A successfully refreshed from Google Patents.
US2790020A
Expired / Lapsed
US
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Ignition apparatus
Assignee: Motors Liquidation Co
•
Filing: 1953-12-04
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Granted: 1957-04-23
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Expires: 1973-12-04
Abstract
No abstract record available.
Inventors
- 👤 David C Redick
- 👤 Verle E Mccarty
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 16:34
CPC Classifications
F; F02; F02P; F02P7/00; F02P7/02; F02P7/021; F02P7/025
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1372065A
Cited
US1641370A
Cited
US2163055A
Cited
US2509094A
Cited
US2593205A
Cited
US2678365A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-04-22 | 1960-10-22 | 1961-04-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-04-22 | 1964-10-22 | 1965-04-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-04-22 | 1968-10-22 | 1969-04-23 | $7700.00 | Window Closed / Lapsed |