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CA975195A
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Boring pipe box
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CA947537A
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Drill jig clip
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US3561470A
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Valve access barrel for use in streets
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ES336005A1
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Piece of derivation, especially part in cross for ducts mounted in the subsoil. (Machine-translation by Google Translate, not legally binding)
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US3420261A
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Pipe drill clamp and attachment
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DE1235691B
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Connection or transition piece for smooth pipes, especially plastic pipes
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DE1187433B
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Flange arrangement for smooth pipes, especially plastic pipes
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GB909478A
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Improvements in and relating to gate-lift valves
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CA816580A
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Pipe drill clamps
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CA864247A
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Valve access barrel
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CA820068A
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Valved junction pipe fitting
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