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FI803649L
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Foerfarande foer att foerbinda mediumledande foerisolerade roerstycken och genom detta foerfarande foerbundna roerstycken
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NL8000797A
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Heat pump heating and ventilating system - uses ground water as heat or cooling reservoir and two heat exchangers
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NL8000798A
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Method for increasing the loadability of soil material
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NL7908186A
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Open-air tennis court construction - has moisture control system with drain-pipes over bowl of impervious material
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NL7701263A
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Method for dewatering sludge and a reservoir for applying that method.
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GB1471802A
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Method of dewatering an excavation site
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DE2448330A1
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PROCEDURE FOR PREVENTING AND CORRECTING DEFORMED PIPING AND PIPE TREATED IN ACCORDANCE WITH THIS PROCEDURE
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DE2401579A1
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SUNROOF
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IE34028B1
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Apparatus for digging a trench
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IE32753L
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A method of laying an underground pipeline
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