Inventor
KRABBE WILFRIED
DE6 patents
Patents
6 patentsUS4249870AFeb 10, 1981
Climbing framework for erecting concrete forms in the manufacture of straight or curved reinforced concrete walls
HOLZMANN PHILIPP AG12 citations71
US4332508AJun 1, 1982
Shield for tunneling and mining
HOLZMANN PHILIPP AG8 citations70
US4298230ANov 3, 1981
Tunnelling apparatus
HOLZMANN PHILIPP AG12 citations70
US4434591AMar 6, 1984
Component useful in producing a cooling tower
HOLZMANN PHILIPP AG0 citations48
US4407098AOct 4, 1983
Liquid storage tank with steel-reinforced concrete exterior
HOLZMANN PHILIPP AG1 citations48
US4255366AMar 10, 1981
Process of producing a cooling tower
HOLZMANN PHILIPP AG1 citations48