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DE1166569B
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Shaft seal, especially for mixing machines
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US3097854A
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Shaft packing gland
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GB878854A
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Improvements relating to glands
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GB841501A
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Improvements relating to extruders for thermoplastic sheet
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GB666456A
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Improvements relating to rubber and plastic compounding and warming machines
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GB550605A
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Improvements relating to pressure gauges
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GB551837A
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New or improved toothed gearing
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GB477607A
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A new or improved method of and apparatus for the heat treatment of commodities by heated fluids such as air, gas or steam
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