Cadillac and Peerless (who had hired an ex-Cadillac mathematician for the job) applied for a patent on the cross-plane simultaneously, and the two agreed to share the idea.
Cadillac和 Peerless（他雇佣了一个前Cadillac 数学家为其工作）同时申请垂直面设计的专利，并且双方答应分享构思。