Tool driving or impacting – Automatic control of power operated means – Tool advance causing or controlling means
Patent
1976-10-26
1978-08-15
Shapiro, Jacob
Tool driving or impacting
Automatic control of power operated means
Tool advance causing or controlling means
61 535, 61 565, 173126, E02D 1100
Patent
active
041062981
ABSTRACT:
A device which includes a ram and a tube, which device can be used for the production of earth holes and poles which are located in these holes and which poles are made of poured or compressed concrete and a process using this device.
Hochstrasser Jurgen
Mathieu Hans
Hochstrasser Jurgen
Hochstrasser nee Wack Elizabeth
Shapiro Jacob
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