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DE639816C
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Manufacture of adhesive protective coatings on metal
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DE624979C
|
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Process for the production of electrolytes
|
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US2056399A
|
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Coating process and coated article
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GB407670A
|
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Improvements in or relating to the plating, cleaning or etching of articles or metals
|
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US2090966A
|
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Electrochemistry
|
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US1996951A
|
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Apparatus for producing a thermoplastic covered metallic article
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DE624307C
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Process for the production of electrolytes for galvanic metal deposition
|
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US1936697A
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Paper manufacture
|
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DE660947C
|
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Process for the production of pigments consisting of water-insoluble heavy metal compounds
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US2000842A
|
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Pigment
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US2000050A
|
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Pigment
|
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US1869082A
|
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Paper manufacture
|
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US1914184A
|
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Paper manufacture
|
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US1864220A
|
|
Paper manufacture
|
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DE581256C
|
|
Process for the manufacture of tanning agents
|
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US1844018A
|
|
Method of preparing tanning substances
|
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US1844019A
|
|
Treatment of animal skins and pelts
|
|
DE593573C
|
|
Process for the pretreatment of animal hide skins ready for tanning
|
|
US1961405A
|
|
Paper manufacture
|
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DE581255C
|
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Process for tanning or partial tanning of bare animals
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