Oscillation Receiver Patented February 19, 1909 by G. W. Pickard. Click images to see bigger version Download PDF version of “Oscillation Receiver” by Pickard.
Read MoreMeans for receiving intelligence communicated by electric waves Patented November 20, 1906 by G. W. Pickard. Click images to see bigger version Download PDF version of “Means for receiving intelligence communicated by electric waves” by Pickard.
Read MoreElectrolytic Rectifier by Fischer Radiant Energy System The present invention relates to apparatus for receiving and transmitting radiant energy within a wide range of frequencies and has for an object the provision of apparatus of this kind that is operative without the necessity of source of local energy such as commercial current or batteries. Another…
Read More
