DK33046C
(en )
1924-04-07
Procedure for Manufacturing a Porous Portland Cement Building Material.
DK32764C
(en )
1924-01-28
Method for Manufacturing Porous Building Materials.
DK32877C
(en )
1924-02-18
Method for Manufacturing Porous Building Materials.
DK37169C
(en )
1927-02-21
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.
DK34609C
(en )
1925-06-15
Method for Manufacturing Porous Building Materials.
DK31916C
(en )
1923-07-02
Method for Manufacturing Porous Building Materials.
DK33414C
(en )
1924-07-07
Cement Brick Making Machine.
DK40438C
(en )
1929-07-08
Method for Manufacturing a Porous Building Material.
DK43621C
(en )
1931-01-26
Procedure for the manufacture of cement roof tiles.
DK31777C
(en )
1923-05-28
Cement Brick Making Machine.
DK35324C
(en )
1925-11-30
Method for Manufacturing Porous Concrete.
DK43764C
(en )
1931-02-23
Method for Manufacturing Porous Concrete.
DK35391C
(en )
1925-12-14
Melting Cement Manufacturing Plant.
DK38573C
(en )
1928-03-19
Method for Making a Porous or Cellular Cement.
DK35526C
(en )
1926-01-25
Cement building stone.
FI11198A
(en )
1926-07-17
Procedure for making a porous building material
FI10833A
(en )
1925-09-11
Procedure for making a porous building material
DK39311C
(en )
1928-10-01
Procedure for the production of cement concrete mixtures.
DK38075C
(en )
1927-10-24
Procedure for the production of cement.
DK32459C
(en )
1923-11-05
Method of Making Cement.
DK27023C
(en )
1920-12-20
Procedure for Manufacturing Gypsum Concrete.
DK40119C
(en )
1929-05-06
Method for Manufacturing Porous Building Materials.
DK38602C
(en )
1928-03-26
Process for the manufacture of pipes of an asbestos-cement mixture or a similar material.