CH54079A
(en )
1912-04-16
Reinforced building block for ceiling structures
FR435333A
(en )
1912-02-27
Reinforced concrete joist ceiling
CH61134A
(en )
1913-09-16
Reinforced concrete ceiling
CH63043A
(en )
1914-01-02
Reinforced concrete ceiling
CH66962A
(en )
1914-10-16
Reinforced concrete ceiling
CH58584A
(en )
1913-03-17
Reinforced concrete ceiling
CH59058A
(en )
1913-04-16
Reinforced concrete ceiling
CH58335A
(en )
1913-03-01
Reinforced concrete beam ceiling
CH59082A
(en )
1913-04-16
Ceiling construction
CH54442A
(en )
1912-05-17
Component for ceiling structures
CH66060A
(en )
1914-08-01
Hollow packing for reinforced concrete ceilings
CH66659A
(en )
1914-10-01
Reinforced concrete hollow ceiling
CH56283A
(en )
1912-10-16
Reinforced concrete beam ceiling
CH50317A
(en )
1911-05-16
Reinforced concrete ceiling
CH48932A
(en )
1910-12-16
Reinforcement for concrete ceilings
CH78754A
(en )
1918-09-02
Building block for ceiling structures
CH62751A
(en )
1913-12-16
Reinforced concrete ceiling slab
CH65871A
(en )
1914-07-16
Anchor box for scaffold girders
FR439869A
(en )
1912-06-26
Reinforced concrete ceiling composed of reinforced concrete t-brackets
FR436109A
(en )
1912-03-19
Reinforced concrete floor
CH70722A
(en )
1915-10-16
Ceiling stone for ribbed concrete ceilings
AT71207B
(en )
1916-02-25
Reinforced concrete ceiling.
CH74815A
(en )
1917-04-16
Scaffolding for high-rise concrete structures
NL800C
(en )
1915-09-15
Reinforced concrete structures
CH58592A
(en )
1913-03-17
Formwork for the production of concrete ceilings