|
US2881614A
(en)
|
|
Building or construction blocks
|
|
US1596284A
(en)
|
|
malmgren |
|
PL36981B1
(2)
|
|
|
|
US1562706A
(en)
|
|
Concrete building element
|
|
US1445713A
(en)
|
|
Concrete building
|
|
US1564264A
(en)
|
|
Concrete floor and ceiling construction
|
|
US2490537A
(en)
|
|
Building construction
|
|
GB723675A
(en)
|
|
Improvements in or relating to roofs
|
|
US1392402A
(en)
|
|
Building-wall construction
|
|
PL36973B1
(2)
|
|
|
|
US1077394A
(en)
|
|
Floor construction.
|
|
ES306212A1
(es)
|
|
Mejoras introducidas en la fabricaciën de elementos prefabricados para la construcciën de edificios
|
|
US1128514A
(en)
|
|
Reinforced-concrete and masonry structure.
|
|
US701165A
(en)
|
|
Building-block.
|
|
US773215A
(en)
|
|
Building construction.
|
|
DE855463C
(de)
|
|
Balkendecke
|
|
US1567422A
(en)
|
|
Wall construction
|
|
PL38091B1
(2)
|
|
|
|
US2026294A
(en)
|
|
Building construction
|
|
US610070A
(en)
|
|
William c |
|
US1520344A
(en)
|
|
Building construction
|
|
PL18226B1
(pl)
|
|
Strop betonowy.
|
|
GB381749A
(en)
|
|
Improvements in the construction of suspended concrete floors
|
|
PL38113B1
(2)
|
|
|
|
FR468929A
(fr)
|
|
Planchers, poutres et plafonds en béton armé, placés sans échafaudages
|