US1792730A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ignition coil
Assignee: Delco Remy Corp
•
Filing: 1927-11-29
•
Granted: 1931-02-17
•
Expires: 1947-11-29
Abstract
No abstract record available.
Inventors
- 👤 William A Chryst
- 👤 Ralph I Bates
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 00:56
CPC Classifications
H; H01; H01F; H01F38/00; H01F38/12; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/4902; Y10T29/49073
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) | 1934-02-16 | 1934-08-18 | 1935-02-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1938-02-16 | 1938-08-18 | 1939-02-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1942-02-16 | 1942-08-18 | 1943-02-17 | $7700.00 | Window Closed / Lapsed |