DK40438C
(en )
1929-07-08
Method for Manufacturing a Porous Building Material.
DK40119C
(en )
1929-05-06
Method for Manufacturing Porous Building Materials.
DK43764C
(en )
1931-02-23
Method for Manufacturing Porous Concrete.
DK42100C
(en )
1930-04-22
Method for Manufacturing a Pavement Material.
DK34609C
(en )
1925-06-15
Method for Manufacturing Porous Building Materials.
DK34860C
(en )
1925-08-10
Method for Manufacturing Porous Building Materials.
DK35244C
(en )
1925-11-09
Method for Manufacturing Porous Building Materials.
DK37169C
(en )
1927-02-21
Method for Manufacturing Porous Building Materials.
DK42058C
(en )
1930-04-14
Method for Manufacturing a Flooring.
DK44267C
(en )
1931-06-22
Method for Manufacturing Base Interchangeable Filter Material.
DK46299C
(en )
1932-10-10
Method for Manufacturing Base Interchangeable Filter Material.
DK38118C
(en )
1927-11-07
Method for Manufacturing Insulation Materials.
DK48689C
(en )
1934-04-30
Method for Manufacturing Porous Building or Filling Materials.
DK38320C
(en )
1928-01-02
Method of Making a Bladder Insulation Material.
DK31916C
(en )
1923-07-02
Method for Manufacturing Porous Building Materials.
DK35324C
(en )
1925-11-30
Method for Manufacturing Porous Concrete.
DK32764C
(en )
1924-01-28
Method for Manufacturing Porous Building Materials.
DK32877C
(en )
1924-02-18
Method for Manufacturing Porous Building Materials.
DK44638C
(en )
1931-09-28
Procedure for the manufacture of a road construction material.
ES106901A1
(en )
1928-06-01
A method of manufacturing a new construction material.
DK42042C
(en )
1930-04-14
Method for Manufacturing an Insulation and Construction Material.
DK45235C
(en )
1932-02-15
Procedure for Manufacturing Bricks.
DK43696C
(en )
1931-02-09
Method of Manufacturing Concrete.
DK40608C
(en )
1929-08-12
Method for Manufacturing Dried Superphosphate.
DK38573C
(en )
1928-03-19
Method for Making a Porous or Cellular Cement.