4. Animal husbandry
  5. Confining or housing
  6. Often portable, small capacity, roofed housing structure

Charles Harrison

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Automatic pet door housing

Animal husbandry – Confining or housing – Often portable – small capacity – roofed housing structure
Patent

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Device for replacing battery in smoke alarm

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

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Dual tank water heating system

Heating systems – Automatic control – Water
Patent

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Particle measuring system with sonically measured flow rate

Measuring and testing – Particle size
Patent

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Profile ID: LFUS-PAI-P-898104

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