|
US2117774A
|
|
Port closure device
|
|
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|
|
Paper towel
|
|
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|
|
Apparatus for chlorinating pulp
|
|
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|
|
Alcoholic treatment of ligneous cellulosic material
|
|
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|
|
Electrically controlled fastening machine
|
|
US2034402A
|
|
Head-box construction
|
|
US1912989A
|
|
Clamping machine
|
|
US2045854A
|
|
Method of treating coffee beans
|
|
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|
|
Method and means for forming sheets from pulp
|
|
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|
|
Drying apparatus
|
|
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|
|
Electrical purification of water
|
|
US1970258A
|
|
Manufacture of pulp
|
|
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|
|
Electrodialysis
|
|
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|
|
Recovery and purification of materials by electrodialysis
|
|
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|
|
Manufacture of pulp
|
|
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|
|
Manufacture of pulp
|
|
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|
|
Method of bleaching pulp
|
|
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|
|
Apparatus for and method of screening pulp
|
|
US1815302A
|
|
Method of producing alkaloids
|
|
US1757768A
|
|
Purified fiber
|
