CH48800A
(en )
1910-12-01
Beam made of iron-reinforced concrete for ceiling structures
CH47728A
(en )
1910-08-01
Novel ceiling made of reinforced concrete
CH48932A
(en )
1910-12-16
Reinforcement for concrete ceilings
CH44321A
(en )
1909-08-02
Beams for ceiling structures
CH54079A
(en )
1912-04-16
Reinforced building block for ceiling structures
CH48430A
(en )
1910-10-17
Hollow stone for concrete hollow stone ceilings
CH56283A
(en )
1912-10-16
Reinforced concrete beam ceiling
FR406156A
(en )
1910-01-24
Reinforced concrete beam
CH39233A
(en )
1908-02-17
Novel ceiling made of reinforced concrete
CH55475A
(en )
1912-08-16
Concrete ceiling
CH49841A
(en )
1911-04-01
Concrete ceiling
CH58335A
(en )
1913-03-01
Reinforced concrete beam ceiling
FR435333A
(en )
1912-02-27
Reinforced concrete joist ceiling
CH54265A
(en )
1912-05-01
Iron-reinforced concrete ceiling made of concrete beams with a T-shaped cross-section
FR403624A
(en )
1909-11-10
Reinforced concrete beams and beams
CH48794A
(en )
1910-12-01
Reinforced concrete beam
CH46127A
(en )
1910-02-01
Reinforced concrete beam
CH50319A
(en )
1911-05-16
Beams for building purposes, in particular for ceiling structures
FR403794A
(en )
1909-11-13
Reinforced concrete for the construction of buildings
CH33176A
(en )
1905-10-31
T-beam ceiling made of reinforced concrete
CH46934A
(en )
1910-05-02
Reinforced concrete slab
CH40412A
(en )
1908-07-16
Fixing device for plasterboard of plaster ceilings
CH54442A
(en )
1912-05-17
Component for ceiling structures
FI3808A
(en )
1909-09-23
Reinforced concrete construction
CH46281A
(en )
1910-02-16
Soundproof construction element made of plaster