2 Matching Results

Search Results

Advanced search parameters have been applied.

in subjects: "electrical energy"

Means for Utilizing Electrical Energy

Patent for an apparatus which consists of an electric motor that is operated by a battery and is designed to use electricity more efficiently. Illustrations included.

Date: July 13, 1909

Creator: Perkins, Thomas F.

Item Type: Patent

Partner: UNT Libraries Government Documents Department

Phantom Telephone System

Patent for phantom telephone system. This invention is a system of transmission of electrical energy for telephones to produce telephone circuits more economically. Illustrations included.

Date: December 11, 1906

Creator: Jordon, Thomas P.