EFRATOM

ELECTRONIC AND ELECTRO PHYSICAL APPARATUS-NAMELY, FREQUENCY STANDARDS, TIME MEASURING APPARATUS, FREQUENCY CONTROLLING APPARATUS, CAVITY RESONATORS, GAS FILLED SPECTRAL LAMPS, GAS FILLED ABSORPTION CELLS, FREQUENCY MIXING AND SYNTHESIZING APPARATUS; STANDARD FREQUENCY RECEIVERS; QUARTZ CRYSTAL OSCILLATORS; AND PARTS OF THE AFOREMENTIONED GOODS ESPECIALLY IN THE FORM OF INTEGRATED CIRCUIT BOARDS