Showing all 4 Facts found
Click to filter results
George Eisenberg of Brooklyn, New York, USA, files patent application Serial No. 351,874. with the US Patent office for an electrical amplification device to be fitted to a violin, "so that the resultant volume is equal to that of several stringed instruments instead of to one".
Milt Shaw And His Detroiters record Walking With Susie for Columbia Records in the USA.
Milt Shaw And His Detroiters record Walking With Susie for Columbia Records in the USA.
A US patent, No. 1,707,545, is granted for the first moving coil speaker, the Western Electric No. 555 Receiver (Horn driver), designed by E.C. Wente at Bell Labs. The speaker is designed "to receive and transmit sound with high and uniform efficiency over a wide frequency range."