4. Geometrical instruments

Werner Hauff

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Apparatus for monitoring fire hazards in a building

Communications: electrical – Condition responsive indicating system – Specific condition
Patent

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Flame-retarding wall feedthrough fitting

Static structures (e.g. – buildings) – Controlled by condition responsive means
Patent

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Sealing body for feedthrough for at least one conducting member

Electricity: conductors and insulators – Insulators – Through wall or plate
Patent

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Shrink-type wall feedthrough fitting

Pipes and tubular conduits – Plural duct – Coaxial
Patent

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Wall duct assembly

Pipe joints or couplings – End to side or plate – Countersunk packed
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Profile ID: LFUS-PAI-P-840998

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