Lorimer v. Erickson

This is an interference proceeding involving rival claims to the invention of a device for a measured telephone system.

The issue is embraced in the following two counts:

“1. In a substation telephone, a switch-hook, a conversation meter, and a press-button therefor, a rotary circuit-changing automatic call-sending device and means locking said press-button except after operation of said call-sending device and while said switch-hook is elevated.

“2. In a substation telephone, automatic impulse-governing means for sending a call, means for recording a call, locking means for said call recording…