Auxiliary device for preliminary forming of stair steps for duplex house
The auxiliary device comprises a bottom plate, a sliding sleeve, a sliding rod and a top plate, the top of the bottom plate is fixedly connected with the bottom of the sliding sleeve, the bottom of the top plate is fixedly connected with the top of the sliding rod, and the inner wall of the sliding...
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Main Authors | , , , |
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Format | Patent |
Language | Chinese English |
Published |
22.03.2022
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Subjects | |
Online Access | Get full text |
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