Patent classifications
H
ELECTRICITY
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H02
GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
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H02G
INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
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3/00
Installations of electric cables or lines or protective tubing therefor in or on buildings, equivalent structures or vehicles
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H02G3/36
Installations of cables or lines in walls, floors or ceilings
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H02G3/38
the cables or lines being installed in preestablished conduits or ducts
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H02G3/40
using separate protective tubing in the conduits or ducts
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