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Inventor
BORRMANN GERALD F
US
2 patents
Patents
2 patents
US4784528A
Nov 15, 1988
Method and apparatus for piled foundation improvement with freezing using down-hole refrigeration units
CHEVRON RES
8 citations
68
US4723876A
Feb 9, 1988
Method and apparatus for piled foundation improvement with freezing using down-hole refrigeration units
CHEVRON RES
18 citations
68