CH311154A
(en )
1955-11-30
Process for the production of shaped structures.
AT171883B
(en )
1952-07-10
Shaped stone for the formation of ceiling beams
MY5700024A
(en )
1957-12-31
Improved system of building construction
CH296591A
(en )
1954-02-28
Procedure for erecting structures.
AT171882B
(en )
1952-07-10
Shaped stone
AT185091B
(en )
1956-03-26
Form block for the formation of reinforced concrete ceiling beams
FR1034957A
(en )
1953-08-10
Process for the construction of buildings
ES28083Y
(en )
1954-01-01
Ceramic blocks for the construction of roofs or roofs
AT169169B
(en )
1951-10-25
Device for the group-wise production of steel-string concrete beams
AT176967B
(en )
1953-12-10
Process for the production of clad concrete beams
ES195177A1
(en )
1951-03-01
PROCEDURE FOR THE MANUFACTURE OF TILES
AT173392B
(en )
1952-12-10
Reinforced concrete hollow beams for the production of ceilings
AT176493B
(en )
1953-10-26
Process for the production of lightweight building materials
ES27086Y
(en )
1953-12-01
Improvements in the manufacture of tiles
FR61434E
(en )
1955-05-04
Slab construction process
AT174442B
(en )
1953-03-25
Process for the desulphurization of gases
AT172361B
(en )
1952-09-10
Process for the production of sand-lime brick building elements
AT177357B
(en )
1954-01-25
Process for improving the surface of skiing areas
ES197033A1
(en )
1953-07-01
PROCEDURE FOR THE ENFOSCADO OF CONCRETE PARAMENTS
AT180134B
(en )
1954-11-10
Process for the production of reinforced concrete ceilings u. like structures
ES25523Y
(en )
1953-05-01
Roof tile
AT174723B
(en )
1953-04-25
Ceiling beams made of lightweight concrete
AT174467B
(en )
1953-04-10
Reinforced concrete ceiling beams
ES27806Y
(en )
1952-02-01
Brick for beam construction
CA475266A
(en )
1951-07-17
Fabrication of concrete elements or structures