4. Stoves and furnaces
  5. Stoves
  6. Heating

George H. K. Lau

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Closed-loop control system for heating systems

Stoves and furnaces – Stoves – Heating
Reexamination Certificate

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Draft control system and method for heating systems

Stoves and furnaces – Dampers – Distance operating devices
Reexamination Certificate

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Latching system and method

Closure fasteners – Keepers – With movable dog – catch or striker
Reexamination Certificate

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Latching system and method

Closure fasteners – Bolts – Hooked end
Reexamination Certificate

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Profile ID: LFUS-PAI-P-2303852

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