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| All Patents in class 123/601 | |||||
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| Number | Date | Patentee | Title | Type | |
| 3,587,550 | Jun. 28, 1971 | R. Zechlin | Electronic Ignition Control System | ignition systems | |
| 4,620,521 | Nov. 04, 1986 | R. Zechlin, R.M. Henderson | Modular Programmable High Energy Ignition System | ignition systems | |