Inventor
HAMBURGER RONALD O
US3 patents
Patents
3 patentsUS4784528ANov 15, 1988
Method and apparatus for piled foundation improvement with freezing using down-hole refrigeration units
CHEVRON RES8 citations68
US4723876AFeb 9, 1988
Method and apparatus for piled foundation improvement with freezing using down-hole refrigeration units
CHEVRON RES18 citations68
US4836716AJun 6, 1989
Method and apparatus for piled foundation improvement through freezing using surface mounted refrigeration units
CHEVRON RES13 citations66