US2924633A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ignition system for internal combustion engines
Assignee: Siemens Schuckertwerke AG
•
Filing: 1955-03-25
•
Granted: 1960-02-09
•
Expires: 1975-03-25
Abstract
No abstract record available.
Inventors
- 👤 Sichling Georg
- 👤 Kafka Wilhelm
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 21:28
CPC Classifications
F; F02; F02P; F02P7/00; F02P7/02; F02P7/03; F02P1/00; F02P1/08; F02P1/083; Y; Y10; Y10S; Y10S310/00; Y10S310/03
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US774922A
Cited
US1679159A
Cited
US1765607A
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US2500953A
Cited
US2512325A
Cited
US2752553A
Cited
US2736858A
Cited
US2774890A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-02-08 | 1963-08-10 | 1964-02-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-02-08 | 1967-08-10 | 1968-02-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-02-08 | 1971-08-10 | 1972-02-09 | $7700.00 | Window Closed / Lapsed |