DK54905C
(en )
1938-06-27
Procedure for tanning hides and skins.
DK53454C
(en )
1937-08-16
Procedure for tanning hides and skins.
DK56633C
(en )
1939-09-04
Skin and Skin Removal Procedure.
DK57049C
(en )
1939-12-18
Procedure for tanning hides and skins.
CH296673A
(en )
1954-02-28
Process for tanning hides and skins.
DK54906C
(en )
1938-06-27
Procedure for tanning hides.
DK61444C
(en )
1943-10-18
Procedure for preparing hides and skins for tanning.
DK67514C
(en )
1948-08-30
Procedure for tanning hides and skins.
DK46488C
(en )
1932-11-14
Procedure for tanning hides or skins.
DK46780C
(en )
1933-01-16
Procedure for the production of tanned skins of animal hides and skins.
DK46228C
(en )
1932-09-26
Procedure for tanning hides and skins.
DK45652C
(en )
1932-05-09
Procedure for tanning hides and the like.
DK56086C
(en )
1939-04-24
Tanning Procedure.
DK51687C
(en )
1936-05-25
Procedure for tanning fish skins.
DK67367C
(en )
1948-08-09
Procedure for tanning hides and skins.
DK44948C
(en )
1931-12-07
Procedure and device for tanning hides and the like.
DK43623C
(en )
1931-01-26
Procedure for the manufacture of artificial leather from waste leather, hides and skins.
DK46541C
(en )
1932-11-28
Procedure for Softening Skins and Skins.
DK68956C
(en )
1949-04-19
Procedure for tanning hides, skins and furs.
DK68769C
(en )
1949-03-21
Procedure for tanning hides, skins and furs.
DK34284C
(en )
1925-03-16
Procedure for rapid tanning of fish skins and the like.
DK44561C
(en )
1931-09-07
Procedure for tanning hides.
DK53858C
(en )
1937-11-15
Method of Making Leather or Leather-Like Materials.
DK50521C
(en )
1935-08-05
Procedure for Improving the Softness and Flexibility of Leather.
CA301393A
(en )
1930-06-24
Device for straining or stretching of skins, hides, pelts, etc.