CH131529A
(en )
1929-02-28
Process for making ceilings and floors soundproof.
GR1374B
(en )
1926-12-30
METHOD FOR THE MANUFACTURE OF PERPOSE BUILDING MATERIALS.
DK40779C
(en )
1929-09-16
Profile beams for building use.
NL23343C
(en )
1931-01-15
MINERAL TANNING METHOD
AT121544B
(en )
1931-02-25
Process for the manufacture of fire-resistant building material.
FR655792A
(en )
1929-04-23
Process for the construction of soundproof floors
FR638089A
(en )
1928-05-15
Ceilings and floors construction process
DK40143C
(en )
1929-05-13
Screen for Car Brakes.
AT108966B
(en )
1928-02-25
Building board.
FR627878A
(en )
1927-10-14
scaffolding
DK41640C
(en )
1930-02-17
Flooring tool.
DK40901C
(en )
1929-10-07
Straafordeler til Mejemaskiner.
CH137893A
(en )
1930-01-31
Simultaneous facility.
GR2029B
(en )
1928-10-24
METHOD OF CONSTRUCTION OF INVESTMENT FOR FLOORS (FLOORS).
GR814B
(en )
1925-01-28
CEMENT STONE MANUFACTURING SYSTEM FOR THE RECONSTRUCTION OF T-SHEET BUILDINGS.
GR1429B
(en )
1927-02-10
NEW METHOD OF WOOD MAKING.
CH112923A
(en )
1925-12-01
Machine for the preparation of building construction bodies.
ES104806A1
(en )
1927-12-16
A process for the preparation of a calcium formaldehyde sulfoxylate.
ES97929A3
(en )
1926-12-01
Building construction improvements.
ES103580A1
(en )
1927-12-01
An iron or tile for buildings.
ES102663A1
(en )
1927-06-16
Fix tiles.
ES98924A1
(en )
1926-10-01
The construction of revolving buildings.
SU9541A1
(en )
1929-05-31
Pa lnik
FR620308A
(en )
1927-04-20
Building construction
AT121436B
(en )
1931-02-25
Process for obtaining water-soluble titanium compounds.