73553833
Aug 16, 1985
Nov 4, 1986
EDUCATIONAL AND INDUSTRIAL SCIENTIFIC SUPPLIES AND TEACHING APPARATUS, NAMELY, MODELS OF CRYSTAL STRUCTURES, MOLECULAR MODELS, ORBITAL MODELS, KITS COMPRISING MEASURING INSTRUMENTS, ACOUSTIC APPARATUS, HEAT MEASURING APPARATUS, AND OPTICAL APPARATUS, ALL FOR THE INSTRUCTION OF PRINCIPLES OF PHYSICS AND OPTICS, AND LABORATORY APPARATUS, NAMELY, CLAMPS CALIPERS, DYNAMOMETERS, TUNING FORKS, SONOMETERS, CALORIMETERS, CONDENSERS, THERMOMETERS, FLASKS, TUBING, BEAKERS, BURNERS, SOLAR ENGINES, THERMOCHROME CRAYONS, PRESSURE CHAMBERS, LENSES, SOLAR BATTERIES AND CELLS, THERMOPILES, LAMPS, LENSES, DIAPHRAGMS, PRISMS, FILTERS, MIRRORS, SCREENS, STROBOSCOPES, MAGNETS, GENERATORS, TRANSFORMERS, RHEOSTATS, METERS, GENERATORS, TRANSFORMERS, OSCILLOSCOPES, THERMIONIC EMISSION TUBES, CLOUD CHAMBERS, PENDULUMS
Electrical and Scientific Apparatus