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2019
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Invention
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Compressive grout mix for use in absorbing compressive or deformation stresses of subterranean fo... |
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2017
|
Invention
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Compressible grout mix for use in absorbing compressive or deformation stresses of subterranean f... |
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|
Invention
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Compressible group mix for use in absorbing compressive or deformation stresses.
The p... |
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2016
|
Invention
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Annular fill compressible grout mix for use behind pre-cast concrete segment installed in time-de... |
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Invention
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Annular fill compressible grout mix for use behind pre-cast concrete segment installed in time de... |
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2010
|
Invention
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Clip for joining steel ribs used as tunnel liner supports. The present invention is directed to a... |
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2009
|
Invention
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Steel liners for tunnels. The present invention is directed to a steel segment assembly for linin... |
