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DE1766807A1
|
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Optical system for lighting for navigation purposes
|
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DE1772719A1
|
|
Condenser device for radiation
|
|
ES339487A1
|
|
Surgical lighting apparatus
|
|
DE1547133A1
|
|
Condenser device for radiation
|
|
DE1472059A1
|
|
Condenser device for radiation
|
|
ES292189A3
|
|
Improvements in the construction of reflector screens for public lighting (Machine-translation by Google Translate, not legally binding)
|
|
GB1012774A
|
|
Lighting apparatus
|
|
GB985836A
|
|
Shadowless lighting apparatus
|
|
DE1243987B
|
|
Optical approach guidance system for aircraft
|
|
US3182287A
|
|
Light-beacon aircraft glide path
|
|
GB915104A
|
|
Operating theatre lighting system
|
|
GB882201A
|
|
Gas-flow control valve
|
|
GB825638A
|
|
Improvements relating to lighting apparatus
|
|
ES223469A1
|
|
Improvements in apparatus for lighting, exempt from shadow projection (Machine-translation by Google Translate, not legally binding)
|
|
DE1011637B
|
|
Dioptric dry lens for microscopes with catoptric device
|
|
DE855383C
|
|
Gas interrupter
|
|
GB723766A
|
|
Improvements in gas-fed intermittent flashing lights
|
|
US2609484A
|
|
Lighting of operating rooms
|
|
US2544250A
|
|
Method of mounting and locking optical lenses in a housing
|
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DE916162C
|
|
Acetylene incandescent light burner
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