4. Fire extinguishers
  5. Sprinkler heads
  6. Lever

Grunau Company Inc.

Corporate Assignee

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Concealed sprinkler head

Fire extinguishers – Sprinkler heads – Lever
Patent

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Concealed sprinkler head

Fire extinguishers – Sprinkler heads – Lever
Patent

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Liquid flow indicator

Electricity: circuit makers and breakers – Fluid pressure – Flow-responsive type
Patent

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Low pressure carbon dioxide fire protection system for semicondu

Fire extinguishers – Special applications – Condition responsive control
Patent

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Sprinkler head

Fire extinguishers – Sprinkler heads
Patent

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