3735381 is referenced by 7 patents and cites 6 patents.

Electronic apparatus requires that the operator of a motor vehicle accurately trace the full course of a segmented undulating serpentine path as a condition precedent to starting a motor vehicle. The path segments must be engaged in seriatum to enable the automobile ignition circuit via intermediate cascaded bistable electronic circuitry.

Title
Testing apparatus for selectively enabling controlled equipment
Application Number
05/148,383
Publication Number
3735381
Application Date
June 1, 1971
Publication Date
May 22, 1973
Inventor
Zadig Ernest A
IPC
B60k 27/08
B60K 28/06
B60K 28/00
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