CH71231A
(en )
1915-12-16
Process for impregnating wood
CH69807A
(en )
1915-07-16
Process for impregnating wood
CH67460A
(en )
1914-12-01
Process for impregnating wood
CH56652A
(en )
1912-11-16
Process for impregnating long timber
CH73218A
(en )
1916-09-01
Process for preserving wood
CH45814A
(en )
1909-12-16
Process for impregnating wood
CH78284A
(en )
1918-07-01
Process for compacting wood
CH49463A
(en )
1911-04-01
Method of steaming wood
CH77117A
(en )
1918-03-01
Method for drying patent leather
CH77378A
(en )
1918-04-01
Method for drying patent leather
CH48253A
(en )
1910-10-01
Process for preserving wood
CH72663A
(en )
1916-06-16
Process for treating wood with acid
CH63647A
(en )
1914-02-02
Process for decorating wood with inlays
CH71033A
(en )
1915-11-16
Process for denicotinizing tobacco leaves
CH71801A
(en )
1916-02-16
Process for denicotinizing tobacco
CH72022A
(en )
1916-03-16
Machine for splitting slate blocks
FR512963A
(en )
1921-02-04
Process for impregnating wood
CH59952A
(en )
1913-06-16
Process for drying materials such as B. wood, leather etc.
CH75478A
(en )
1917-08-01
Wood impregnation process
AT96137B
(en )
1924-02-25
Process for dry distillation of wood or the like.
CH66170A
(en )
1914-08-17
Process for preserving the wooden structural parts of buildings of all types, especially those with a framework
CH68971A
(en )
1915-05-01
Process for impregnating artificial straw
CH74760A
(en )
1917-04-02
Cleaning house for cleaning workpieces
CH41633A
(en )
1908-11-02
Process for preserving wood by impregnation
AT98689B
(en )
1924-12-10
Process for splitting heavy hydrocarbons.