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US1683239A
Expired / Lapsed
US
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Ignition apparatus
Assignee: Delco Remy Corp
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Filing: 1925-05-26
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Granted: 1928-09-04
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Expires: 1945-05-26
Abstract
No abstract record available.
Inventors
- 👤 William A Chryst
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 16:57
CPC Classifications
F; F02; F02P; F02P5/00; F02P5/04; F02P5/05; F02P5/06
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) | 1931-09-04 | 1932-03-05 | 1932-09-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1935-09-04 | 1936-03-05 | 1936-09-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1939-09-04 | 1940-03-05 | 1940-09-04 | $7700.00 | Window Closed / Lapsed |