Aligning and coupling means for trenchduct
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United States of America Patent
Stats
-
Mar 6, 1990
Issued Date -
N/A
app pub date -
Jan 12, 1987
filing date -
Jun 18, 1984
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A trench duct side rail having an upper section and a lower section, the upper section including a pair of spaced-apart downwardly extending legs and with the lower section being disposed between the legs. The upper and lower sections are axially off-set so that on one end of the side rail the upper section extends outwardly of the lower section and on the opposite end of the side rail the upper section extends inwardly of the lower section.
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Cited Art Landscape
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