CH78633A
(en )
1919-02-01
Manufacturing process of a building block
FR487110A
(en )
1918-06-05
Manufacturing process of a slag cement
FR466619A
(en )
1914-05-19
Manufacturing process of methyl-hexamethylenetetramine sulfocyanide
FR453855A
(en )
1913-06-18
Manufacturing process of artificial mosaics
FR449335A
(en )
1913-02-24
Manufacturing process of artificial marbles
FR512594A
(en )
1921-01-26
Sodium percarbonate manufacturing process
FR530180A
(en )
1921-12-17
Process for the manufacture of a wall element or a building block
FR512582A
(en )
1921-01-26
Basic enamels manufacturing process
FR498149A
(en )
1919-12-30
Manufacturing process of artificial flamed stoneware
CH74590A
(en )
1917-06-01
Construction process of concrete floors
CH71917A
(en )
1916-03-01
Sodium sulfate manufacturing process
FR430899A
(en )
1911-10-26
Manufacturing process of artificial tiles
CH71590A
(en )
1916-01-17
Manufacturing process of nitrides
FR465146A
(en )
1914-04-08
Plaster manufacturing process
CH72604A
(en )
1916-11-16
Manufacturing process of artificial slates
FR472465A
(en )
1914-12-08
Manufacturing process of nitrogen compounds
FR524829A
(en )
1921-09-10
Explosives manufacturing process
FR480300A
(en )
1916-07-12
Manufacturing process for tanning extracts
FR477066A
(en )
1915-09-22
Manufacturing process of a magnesian cement
FR478879A
(en )
1916-01-14
Bolt manufacturing process
FR492975A
(en )
1919-07-26
Manufacturing process of silica bricks
FR22242E
(en )
1921-05-24
Manufacturing process of silica bricks
CH71805A
(en )
1916-02-16
Calciocyanamide manufacturing process
FR487772A
(en )
1918-07-24
Manufacturing process of profiled pipes
FR497975A
(en )
1919-12-23
Construction process of concrete floors