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US2017275137A1
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Independent traction drive and suspension systems for a plurality of elevator cabs and counterweights in a hoistway
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System and method for controlling multiple elevator cabs in an elevator shaft
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Vertically and horizontally mobile elevator cabins
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AU2015201264A1
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System having multiple cabs in an elevator shaft
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KR20160065081A
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System having a plurality of elevator cabs and counterweights that move independently in different sections of a hoistway
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WO2014194330A2
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System having multiple cabs in an elevator shaft and control method thereof
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US2014262628A1
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System having multiple cabs in an elevator shaft and control method thereof
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US2013306408A1
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System having a plurality of elevator cabs and counterweights that move independently in different sections of a hoistway
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AU2011355671B2
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System having multiple cabs in an elevator shaft
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