US2787649A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetic and a photoelectric system for replacing metallic make and break contacts in automobile ignition systems
Assignee: Commonwealth Engineering Company of Ohio
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Filing: 1953-05-20
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Granted: 1957-04-02
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Expires: 1973-05-20
Abstract
No abstract record available.
Inventors
- 👤 James W Ballard
- 👤 Jr Milton M Moorhead
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 21:16
CPC Classifications
F; F02; F02P; F02P7/00; F02P7/06; F02P7/073; Y; Y10; Y10S; Y10S74/00; Y10S74/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-04-01 | 1960-10-01 | 1961-04-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-04-01 | 1964-10-01 | 1965-04-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-04-01 | 1968-10-01 | 1969-04-02 | $7700.00 | Window Closed / Lapsed |