Plastic forms for poured concrete
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United States of America Patent
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-
May 14, 1991
Grant Date -
N/A
app pub date -
Jun 21, 1990
filing date -
Jun 21, 1990
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A hollow foamed plastic form for concrete has a pair of opposed parallel side walls with planar upper and lower faces, and a pair of opposed end members. Disposed on the upper and lower faces of the side walls are a series of elongated locking members, each composed of a pair of offset ribs having a trapezoidal shape.
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Cited Art Landscape
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