Solid imaging apparatus having a semi-permeable film
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United States of America Patent
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Feb 21, 1995
Issued Date -
N/A
app pub date -
Feb 3, 1992
filing date -
Oct 29, 1990
priority date (Note) -
Expired
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Abstract
An apparatus for fabricating integral three-dimensional objects from successive layers of photoformable compositions by exposing the layers of the composition through a semi-permeable film that allows creation of release coatings on the side of the film facing the composition.
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