CH73287A
(en )
1916-09-16
Method and installation for the manufacture of artificial leather
FR484347A
(en )
1917-09-25
Process for the production of artificial slates
FR433281A
(en )
1911-12-29
Process for the production of artificial leather
FR447904A
(en )
1913-01-18
Process for the production of artificial rubber
FR453208A
(en )
1913-06-03
Process for the production of selenocyanides and selenophenols of the anthraquinone series
FR488995A
(en )
1918-12-03
Process for the production of artificial leather
FR444175A
(en )
1912-10-11
Process for the production of aminoanthraquinones
FR480300A
(en )
1916-07-12
Manufacturing process for tanning extracts
FR493569A
(en )
1919-08-13
Product for the manufacture of ebonite and its manufacturing process
FR418494A
(en )
1910-12-10
Process for the production of artificial leather
CH72604A
(en )
1916-11-16
Manufacturing process of artificial slates
FR447209A
(en )
1912-12-27
Method and device for the production of artificial stone objects
FR481385A
(en )
1916-11-28
Method and apparatus for the production of ammonium sulfate
FR489397A
(en )
1919-01-27
Method and device for the manufacture of concrete articles
CH58351A
(en )
1913-03-01
Process for the production of artificial building blocks
CH74821A
(en )
1917-06-01
Mold frames for the production of artificial stone workpieces
CH57059A
(en )
1912-12-16
Process for the manufacture of a leather substitute
FR493789A
(en )
1919-08-21
Process for the manufacture of an impermeable cement and resulting product
FR480072A
(en )
1916-06-15
Manufacturing process of artificial slates
FR469694A
(en )
1914-08-06
Process for the manufacture of artificial mother-of-pearl
CH44688A
(en )
1909-09-01
Process for the manufacture of an artificial fertilizer
FR421431A
(en )
1911-02-22
Process for the production of artificial leather
FR514560A
(en )
1921-03-14
Process for the production of urea
FR459988A
(en )
1913-11-20
Process for the manufacture of isoprene
FR457846A
(en )
1913-09-26
Process for the production of artificial egrets