CH72461A
(en )
1916-05-16
Hollow bodies for the production of reinforced concrete ceilings
CH68126A
(en )
1915-02-16
Shaped stone for the production of reinforced hollow concrete ceilings
CH55494A
(en )
1912-09-02
Hollow bodies for the production of ceilings
CH77847A
(en )
1918-06-01
Process for the production of polygonal reinforced concrete hollow masts
CH56769A
(en )
1912-11-16
Reinforced concrete beams for making ceilings
CH65872A
(en )
1914-07-16
Process for the production of concrete or reinforced concrete piles
CH60699A
(en )
1913-08-01
Ceiling block for the production of reinforced concrete solid ceilings
CH49535A
(en )
1911-03-01
Reinforced concrete I-beams for the production of ceilings with cavities
CH50318A
(en )
1911-05-16
Process for the production of reinforced concrete floors
CH55154A
(en )
1912-07-16
Process for the production of concrete beams with cavities
CH71161A
(en )
1915-12-01
Process for the production of portland cement
CH76292A
(en )
1917-12-01
Process for the manufacture of objects from concrete
CH52365A
(en )
1911-11-16
Building block for the production of hollow masonry
CH72147A
(en )
1916-08-16
Reinforced concrete ceiling with hollow stones
CH74414A
(en )
1917-02-16
Process for the production of a demountable, reinforced concrete dry hollow wall construction for building and civil engineering
CH63952A
(en )
1914-03-02
Process for the production of hollow ceilings from concrete or reinforced concrete, with attached plaster ceiling
CH75748A
(en )
1917-09-17
Formwork for the production of grooves with a dove-shaped cross-section in concrete structures
CH78049A
(en )
1918-10-01
Reinforced concrete ceiling and method of making the same
CH78054A
(en )
1918-10-01
Reinforced concrete stairs and method of making the same
CH61633A
(en )
1913-10-01
Process for the production of ceiling formwork
CH49081A
(en )
1911-01-02
Process for the production of reinforced concrete floors
CH58351A
(en )
1913-03-01
Process for the production of artificial building blocks
CH67057A
(en )
1914-11-02
Process for the production of a hollow ceiling from reinforced concrete
CH66062A
(en )
1914-08-01
Hollow stone for the production of hollow body slabs
CH64415A
(en )
1914-04-01
Formwork device for the production of concrete structures