JPH05340193
PURPOSE:To lighten burden on workers and to reduce a construction period in the case the internal wall of the existing tunnel is covered with lining slabs such as concrete slabs, etc., to execute repairing work. CONSTITUTION:After a plurality of concrete slabs 5 are connected to build up a concrete...
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Main Author | |
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Format | Patent |
Language | English |
Published |
21.12.1993
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Edition | 5 |
Subjects | |
Online Access | Get full text |
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