DK31916C
(en )
1923-07-02
Method for Manufacturing Porous Building Materials.
DK32764C
(en )
1924-01-28
Method for Manufacturing Porous Building Materials.
DK32877C
(en )
1924-02-18
Method for Manufacturing Porous Building Materials.
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.
DK35324C
(en )
1925-11-30
Method for Manufacturing Porous Concrete.
DK43764C
(en )
1931-02-23
Method for Manufacturing Porous Concrete.
DK40119C
(en )
1929-05-06
Method for Manufacturing Porous Building Materials.
DK40438C
(en )
1929-07-08
Method for Manufacturing a Porous Building Material.
DK38573C
(en )
1928-03-19
Method for Making a Porous or Cellular Cement.
DK28070C
(en )
1921-07-25
Method for Manufacturing Highly Porous Mortar Materials.
DK45671C
(en )
1932-05-17
Method for Manufacturing Solid Carbon Blocks.
DK35391C
(en )
1925-12-14
Melting Cement Manufacturing Plant.
DK33046C
(en )
1924-04-07
Procedure for Manufacturing a Porous Portland Cement Building Material.
DK31777C
(en )
1923-05-28
Cement Brick Making Machine.
DK42359C
(en )
1930-06-02
Method for Manufacturing Asphalt-Like Road Construction Materials.
DK55333C
(en )
1938-10-10
Method for Manufacturing Porous Lightweight Concrete.
DK53166C
(en )
1937-05-31
Method for Manufacturing Porous Building Materials.
DK48689C
(en )
1934-04-30
Method for Manufacturing Porous Building or Filling Materials.
DK38029C
(en )
1927-10-03
Method for Manufacturing Impregnated Wood.
DK32459C
(en )
1923-11-05
Method of Making Cement.
DK45235C
(en )
1932-02-15
Procedure for Manufacturing Bricks.
DK27023C
(en )
1920-12-20
Procedure for Manufacturing Gypsum Concrete.