4. Measuring, testing, or signalling instruments
  5. Security or signal instrument or casing
  6. Element or attachment

Charles M. Campbell

Inventor

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Aluminum can handling tongs

Handling: hand and hoist-line implements – Hand bars and hand barrows – Opposing jaws
Patent

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Combined bag distending and holding form

Packages and containers for goods – Element or attachment
Patent

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Evaporative cooler

Refrigeration – Material cooling means including gas-liquid contactor
Patent

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Lens cover for emergency warning light

Measuring – testing – or signalling instruments – Security or signal instrument or casing – Element or attachment
Patent

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Media

Liquid purification or separation – With gas-liquid surface contact means
Patent

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Profile ID: LFUS-PAI-P-432771

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