DK24841C
(en )
1919-08-11
Procedure for the manufacture of flexible, suitable for storage, tanned leather.
DK29206C
(en )
1922-01-23
Procedure for Tanning Animal Skins.
DK24190C
(en )
1919-03-10
Procedure for Tanning Animal Skins.
DK26286C
(en )
1920-07-19
Procedure for tanning animal skins.
DK29930C
(en )
1922-07-17
Procedure for tanning animal skins.
DK24568C
(en )
1919-05-26
Procedure for Utilization of Leather Waste.
DK29205C
(en )
1922-01-23
Procedure for the manufacture of tanning substances.
DK30187C
(en )
1922-09-04
Procedure for the Development of Bladder Acid.
ES63404A1
(en )
1916-12-16
Procedure for tanning.
DK22268C
(en )
1917-07-16
Procedure for drying patent leather.
DK26140C
(en )
1920-06-21
Procedure for the manufacture of artificial abrasives.
DK18578C
(en )
1914-03-16
Procedure for Tanning Animal Skins.
DK19154C
(en )
1914-08-24
Procedure for Tanning Animal Skins.
DK16843C
(en )
1913-01-06
Procedure for Tanning Animal Skins.
DK26787C
(en )
1920-10-25
Procedure for tanning animal skins.
DK26802C
(en )
1920-10-25
Procedure for tanning animal skins.
DK22281C
(en )
1917-07-16
Procedure for the manufacture of leather by tanning with iron salts.
NL5086C
(en )
1920-07-01
Tanning method
DK22700C
(en )
1917-12-24
Procedure for Impregnation of Peat.
DK22645C
(en )
1917-12-03
Boot tightener.
DK34002C
(en )
1924-12-29
Tanning Procedure.
ES64323A3
(en )
1917-05-16
A procedure for the manufacture of heels from conglomerate of leather.
DK28174C
(en )
1921-08-15
Procedure for Tanning Animal Skins.
DK28712C
(en )
1921-10-31
Procedure for tanning animal skins.
DK22630C
(en )
1917-11-26
Spade for Military Use.