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1976-11-30
CHROME TANNING PROCEDURE
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1975-10-31
PROCEDURE FOR THE PREPARATION OF SHAVED LEATHERS READY FOR TURNING
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1976-05-14
PROCEDURE FOR THE ISOMERIZATION OF ALKYLENES
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1979-11-30
PROCEDURE AND APPARATUS FOR THE MANUFACTURE OF TANNED LEATHER AND LEATHER
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1977-04-29
AN AGENT FOR FINISHING LEATHERS AND LEATHER SUBSTITUTES
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1986-05-14
PROCEDURE FOR THE PRODUCTION OF LEATHER AND FUR
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1979-06-29
PROCEDURE FOR THE CHROME TANNING OF PIQUELADO AND NON-PIQUELADO RAW LEATHERS AND FOR THE LEATHER COAT, AND THE TANNING COMPOSITION USED IN THE SAME
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1981-06-01
BOMBO FOR THE TREATMENT OF SKINS AND LEATHERS
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1980-07-31
PROCEDURE FOR THE LIMING OF ANIMAL SKINS WITH AND WITHOUT HAIR
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1983-06-01
PROCEDURE FOR THE TREATMENT OF LEATHER WITH RUBBER LATEX.
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1981-03-16
PROCEDURE FOR THE ROLLING OF MINERALLY TANNED LEATHERS
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1974-06-10
PROCEDURE FOR THE REMOVAL OF LEATHER AND FUR
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1977-02-15
METHOD FOR TREATING CHROME TANNED LEATHER
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1974-10-08
PROCEDURE FOR THE TANNING OF LEATHERS AND SKINS
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1976-12-20
PROCEDURE TO PREPARE SKINS AND LEATHERS FOR SUBSEQUENT TANNING OR CONSERVATION
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1980-12-15
PROCEDURE FOR GREASING AND IMPREGNATING HIDES AND SKINS
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1979-08-31
BASE MATERIAL OF SYNTHETIC LEATHER, PROCEDURE FOR ITS MANUFACTURE AND VULCANIZATION PASTE FOR THE PROCEDURE
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1974-09-30
PROCEDURE FOR TANNING SKINS
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1982-02-01
APPARATUS AND ITS CORRESPONDING PROCEDURE, FOR THE WET TREATMENT OF LEATHERS
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1979-10-20
PROCEDURE FOR TANNING LEATHER WITH HYDROPHILIC OLIGOIURETHANS
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1977-03-31
DRUM FOR SKIN TREATMENT AND THE SIMILAR
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1976-04-28
Tanning of hides
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1979-05-31
Tanning of hides or skins
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(en )
1974-08-23
NEW ACCELERATED PROCEDURE FOR LEATHER TANNING
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1976-04-30
The method of dehairing hides