Method and apparatus for the deployment of a duct within a mass of powder-like material
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United States of America Patent
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Sep 7, 1993
Grant Date -
N/A
app pub date -
Sep 5, 1991
filing date -
Sep 6, 1990
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The subject matter of the present invention is a method for the deployment of a duct within a mass of powder-like material, according to which the duct is deployed from a compact configuration, characterized by the fact that the duct is brought in this compact configuration to a point in the mass of powder-like material and, while one end of the duct is held fixed, the other end is moved toward the exterior of the mass of powder-like material, the deployment of the duct thus being effected.
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