GB2131142A
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Food freezing tunnels
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ZA7902667B
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Plastic material incorporating reclaimed tyre rubber
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GB2014065A
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Production of fine metal powders
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FR2384219A1
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Cooling systems for goods containers - has spray jets for liquid coolant mounted in rectangular framework attached to container side
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GB1384549A
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Metal heating furnaces
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GB1314347A
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Air rectification process for the production of oxygen
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DE1947539A1
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Process for the liquefaction of gas mixtures
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GB1146283A
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Improvements in or relating to direct current electric arc initiation
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GB1120834A
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Improvements in or relating to low temperature distillation
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GB1117561A
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Improvements in or relating to processes and plant for the fractionation of air
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GB1014612A
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Separation of gaseous mixtures
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GB1023352A
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Refrigeration process
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CA566989A
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Fractionating columns
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CA550857A
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Air fractionating cycle
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CA521641A
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Air fractionating cycle and apparatus
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CA461717A
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Method of pumping liquid oxygen
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CA608601A
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Method and apparatus for fractionating gaseous mixtures
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