Patent classifications
H
ELECTRICITY
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H01
ELECTRIC ELEMENTS
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H01H
ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
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9/00
Details of switching devices, not covered by groups H01H1/00 - H01H7/00
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H01H9/02
Bases, casings, or covers
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H01H9/04
Dustproof, splashproof, drip-proof, waterproof, or flameproof casings
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H01H9/047
provided with venting means
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