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1992-12-30
Method and apparatus for refining glassy material
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1990-04-25
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1991-05-15
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1993-06-30
Method and apparatus for making molten glass
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1988-11-30
Method and apparatus for melting and refining glassy materials
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1987-11-25
Method and apparatus for the continuous melting of scrap
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1988-07-06
Method of excavation and apparatus therefor
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1990-03-21
Scrap removal apparatus and method
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1990-08-22
Method and apparatus for melting glass batch
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1988-04-27
Apparatus and method for fragmenting slag
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1986-06-17
Method of introducing sludge and apparatus therefor
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1994-11-01
Apparatus and method for recovering materials from process baths
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1989-07-26
Shredding process and apparatus for carrying out said process
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1990-10-17
Method of and apparatus for fuel control
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1989-11-08
Method of and apparatus for casting
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1990-09-26
Method and apparatus for refining molten metal
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1987-09-21
Method of thermally modifying sukfur refining process wastes and apparatus therefor
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1989-01-23
Method of and apparatus for oxydation of hydrocarbons
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1989-01-18
Method and apparatus of treating photoresists
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1989-01-18
Method and apparatus of treating photoresists
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1988-03-30
Process for refining gold and apparatus employed therefor
PL264191A1
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1988-09-15
Method of and apparatus for obtaining granulated sulfur
JPS6487666A
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1989-03-31
Method and apparatus for producing furnace black
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1989-12-27
Method of thermally modifying sulfur refining wastes and apparatus therefor
HUT47520A
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1989-03-28
Process and apparatus for producing chlorinated chloroformiates