CH72604A
(en )
1916-11-16
Manufacturing process of artificial slates
FR480072A
(en )
1916-06-15
Manufacturing process of artificial slates
FR453855A
(en )
1913-06-18
Manufacturing process of artificial mosaics
FR439901A
(en )
1912-06-27
Manufacturing process of artificial marble and mosaics
FR484347A
(en )
1917-09-25
Process for the production of artificial slates
FR449335A
(en )
1913-02-24
Manufacturing process of artificial marbles
FR430899A
(en )
1911-10-26
Manufacturing process of artificial tiles
FR487110A
(en )
1918-06-05
Manufacturing process of a slag cement
FR19578E
(en )
1915-03-16
Manufacturing process of? - chloranthraquinones
FR446323A
(en )
1912-12-02
Manufacturing process of? - chloranthraquinones
FR438346A
(en )
1912-05-14
Manufacturing process of artificial granite
FR520648A
(en )
1921-06-28
Manufacturing process of roofing elements
FR480300A
(en )
1916-07-12
Manufacturing process for tanning extracts
FR447646A
(en )
1913-01-10
Manufacturing process of determined anhydrides
FR421886A
(en )
1911-03-07
Manufacturing process of artificial marble
FR480285A
(en )
1916-07-12
Process for the production of artificial stones
FR469694A
(en )
1914-08-06
Process for the manufacture of artificial mother-of-pearl
FR466619A
(en )
1914-05-19
Manufacturing process of methyl-hexamethylenetetramine sulfocyanide
FR480809A
(en )
1916-09-28
Manufacturing process of artificial leather
FR488991A
(en )
1918-12-03
Manufacturing process of artificial leathers
CH60446A
(en )
1913-07-16
Manufacturing process of construction elements
FR453417A
(en )
1913-06-07
Manufacturing process of artificial stones
FR413061A
(en )
1910-07-30
Manufacturing process of artificial fertilizer
FR19367E
(en )
1915-01-20
Artificial fur manufacturing process
FR498149A
(en )
1919-12-30
Manufacturing process of artificial flamed stoneware