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United States of America Patent
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Jun 16, 2009
Grant Date -
Dec 11, 2008
app pub date -
Jun 7, 2007
filing date -
Jun 7, 2007
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Apparatus using two hinged L-shaped squares to determine perpendicular with respect to a plane. Placing the apparatus against a plane with the squares offset angularly with respect to each other and placing an object to be secured to a plane adjacent to the hinge within fins parallel to the hinge permits securing the object perpendicular to the plane with one hand while holding the apparatus and object with the other hand.
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