4. Environmental heating and cooling; fluid handling and sanitary e
  5. Heating or cooling
  6. Element or attachment, not elsewhere specified

W. F. Sonnekalb, Jr.

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Fire alarm

Measuring – testing – or signalling instruments – Security or signal instrument or casing – Alarm or control thereof
Patent

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Photographic print drying apparatus

Photography and optical equipment – Projector or viewer – With provision for transparency magazine
Patent

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Stove

Environmental heating and cooling; fluid handling and sanitary e – Heating or cooling – Element or attachment – not elsewhere specified
Patent

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