Sichtweitenmessgeraet according to the principle of vorwaertsstreuung and use thereof.
CH639770A5
Visibility measuring device.
CA1131330A
Laser ceilometer with safety power-reduction feature
CH628139A5
Method and device for cloud height measurement.
US3598492A
Optical calibrating device including light diffusers arranged to simulate a path of back-scattered light
US3576557A
Arrangement for controlling marine warning lights as a function of fog density
US3672775A
Method and arrangement for measuring the density of natural fog in the free atmosphere using light source which is also a flashing warning beacon
GB1003978A
Spark discharge lamp arrangements
GB879945A
Method and device for electrically sterilizing and cleaning milking machines or the like
GB814608A
Method of and apparatus for electric resistance welding
GB751224A
Velocity-dependent measuring and control systems
ES207776A3
Improvements in the construction of receivers for the transmission of signals by means of luminous flashes (Machine-translation by Google Translate, not legally binding)
ES207751A3
Improvements in the construction of emitters for the transmission of signals by means of luminous flashes (Machine-translation by Google Translate, not legally binding)
GB742396A
Electric impulse lamp as transmitter for light-flash signalling system
GB701476A
Method and apparatus for accelerating the action of a treating solution on fibrous material
GB719356A
Controlled electric sparking system for stroboscopes and the like
GB719296A
Stroboscopic light source
GB699144A
An ignition system for internal combustion engines
