71439800
Jan 21, 1941
May 5, 1942
Direct Recording Oscillograph Units,[ELEctrometers for Use as Parts of MeasuriNG Devices,] Vibration Pickups for Use AS a Part of a Measuring Device [HeadpHONES for Use with Measuring and Testing EQUIment and Microphones for Use with MEASURing and Testing Equipment]
Fancy Goods