CH81282A
(en )
1919-06-02
Method of manufacturing artificial whetstones for lithographic stones, marble and the like
CH80665A
(en )
1919-09-01
Process for the production of an artificial stone
CH78054A
(en )
1918-10-01
Reinforced concrete stairs and method of making the same
CH78053A
(en )
1918-06-17
Artificial building block and method of making the same
CH82936A
(en )
1919-11-01
Key and method of making the same
CH80791A
(en )
1919-04-16
Structure and method of manufacturing the same
CH65491A
(en )
1914-06-16
Process for the production of hollow stones closed on all sides
CH75980A
(en )
1918-03-16
Process for the production of artificial leather
CH77110A
(en )
1918-08-01
Process for the production of artificial leather
CH77381A
(en )
1918-09-02
Process for the production of artificial leather
CH59610A
(en )
1913-06-02
Process for the production of artificial stones
CH61357A
(en )
1913-09-16
Process for the production of artificial stones
CH58857A
(en )
1913-04-01
Process for the production of artificial stones
CH75974A
(en )
1917-10-16
Process for the production of silicon carbide
AT78008B
(en )
1919-08-25
Process for the production of artificial stones from porphyry or similar volcanic stones.
CH77382A
(en )
1918-04-16
Method of making stone wood
CH76587A
(en )
1918-01-16
Patterned leather and method of making the pattern
CH75418A
(en )
1918-01-02
Small stone pavement and method of making same
CH67851A
(en )
1915-01-16
Process for the production of marble-like artificial stone slabs
AT74183B
(en )
1918-02-25
Process for the production of artificial stone.
CH79811A
(en )
1919-01-16
Process for the production of artificial leather
CH79342A
(en )
1919-03-17
Process for the production of artificial leather
AT71253B
(en )
1916-02-25
Process for the production of artificial stones from porphyry or similar volcanic rocks.
CH77319A
(en )
1918-08-16
Method and device for the manufacture of hulls from reinforced concrete
CH80901A
(en )
1919-04-16
Process for the production of hollow bodies and hollow bodies produced by this method