CH25279A
(en )
1903-04-30
Winding mandrel for the production of hollow bodies with an angular shape
AT9702B
(en )
1902-11-10
Process for the production of hollow bodies of angular shape.
CH55494A
(en )
1912-09-02
Hollow bodies for the production of ceilings
CH69478A
(en )
1915-06-16
Process for the production of hollow bodies with inner lining
CH72461A
(en )
1916-05-16
Hollow bodies for the production of reinforced concrete ceilings
CH77847A
(en )
1918-06-01
Process for the production of polygonal reinforced concrete hollow masts
CH76581A
(en )
1918-01-16
Process for the production of hollow bodies of angular cross-section from sheet metal
CH77692A
(en )
1919-02-01
Process for the production of hollow bodies and coatings of any shape
CH13964A
(en )
1897-09-15
Forming apparatus for the production of hollow glass bodies
CH21006A
(en )
1901-05-31
Machine for the production of hollow glass bodies
CH27257A
(en )
1903-12-31
Novel hollow stone for the production of ceilings
CH48045A
(en )
1910-09-01
Process for the production of hollow ceilings
CH56308A
(en )
1912-11-01
Process for the production of quartz hollow bodies
CH50465A
(en )
1911-06-01
Mat for the production of hollow bodies
CH30364A
(en )
1904-12-15
Device for the production of seamless metal hollow bodies
CH38888A
(en )
1908-01-02
Hollow core for the production of hollow bodies and channels
CH26403A
(en )
1903-08-31
Device for the production of hollow bodies by punching
CH51223A
(en )
1911-08-16
Process for the production of dense, reinforced, hollow long bodies such as tubes, masts, posts and the like.
CH26480A
(en )
1903-09-15
Device for the production of tape rolls
CH48063A
(en )
1910-09-16
Press for the production of hollow bodies with threads
AT27600B
(en )
1907-02-25
Process for the production of hollow bodies from quartz glass.
CH49382A
(en )
1911-02-01
Process for the production of magnesia cement
CH31285A
(en )
1905-03-31
Device for the production of barrel-shaped containers
CH39693A
(en )
1908-04-01
Shaped stone for the production of reinforced ceilings
CH23971A
(en )
1902-10-31
Hollow stone for the production of ceilings, walls etc.