4. Automatic temperature and humidity regulation
  5. Hot-air furnace

Harold R. Johnson

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Air conditioning apparatus and methods using underground duct

Refrigeration – Processes – Exchanging heat between plural systems – e.g. – disparate
Patent

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Energy saving furnace controller

Automatic temperature and humidity regulation – Hot-air furnace
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Hand operated jack for a multipurpose jig apparatus of the type

Implements or apparatus for applying pushing or pulling force – Step-by-step traveling bar – Clutch actuated
Patent

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Kitchen composter

Solid material comminution or disintegration – Apparatus – Including means applying fluid to material
Patent

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Profile ID: LFUS-PAI-P-917661

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