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Improvements in the construction of automatic switches for ladders with insert switch for day-late-night (Machine-translation by Google Translate, not legally binding)
Improvements in the construction of automatic switches for ladders with insert switch for day-late-night (Machine-translation by Google Translate, not legally binding)
Improvements in the construction of automatic switches for stairs with insert switch for day-after-night, characterized in that the switch is constituted as push-button switch. (Machine-translation by Google Translate, not legally binding)
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