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Device for optically recording an object
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Device for converting images into electronical signals
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Sectors-screen clock.
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Air-permeable closure for a container receiving perishable foodstuffs
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Energy converter
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Process and apparatus for preserving a perishable beverage
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Apparatus for driving in timber piles by pneumatic vibration drivers
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Improved Device for Trapping Insects, Vermin and the like.
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Improvements in Welding Furnaces Heated by Gaseous or Vaporous Fuel.
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An Improved Drinking Water Standard.
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Combined door spring and check.
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