Magnetic shield for image intensifier tube
Magnetic shielding for an X-ray image intensifier tube
Magnetron
Manufacture of electric lamps
Mercury arc lamps
Mercury lamp for promoting plant growth
Mercury metal-halide lamp including neodymium iodide, cesium and
Mercury-metal halide discharge lamp
Metal halide arc discharge lamp
Metal halide arc discharge lamp having coiled coil electrodes
Metal halide discharge lamp having optimum electrode location
Metal halide lamp
Metal halide lamp having lead metal powder to reduce blackening
Metal halide lamp having open tungsten coil electrodes
Metal halide lamp using loop electrodes
Metal halide lamp with stem mounted support frame for arc tube s
Metal iodide vapour discharge lamp
Metal vapor discharge lamp with a restrain member for inner...
Metal vapor lamp having internal coating for extending condensat
Metal vapor laser discharge device