DK48915C
(en )
1934-06-25
Method for Manufacturing Bituminous Roofing and Insulating Paper with Green Surfaces.
DK50453C
(en )
1935-07-22
Method for Manufacturing Bituminous Roofing and Insulating Paper with Green Surfaces.
DK48061C
(en )
1933-11-27
Method for Manufacturing Bituminous Roofing and Insulating Paper.
FR813707A
(en )
1937-06-08
Roofing
SU49133A1
(en )
1936-08-31
The way brickwork on bituminous in a tinder
SU29008A1
(en )
1933-01-31
The method of preparation of roofing tiles
DK51699C
(en )
1936-06-02
Method for Manufacturing Heat Resistant Insulation Materials.
DK49042C
(en )
1934-07-23
Building elements and method and machine for making such.
DK54569C
(en )
1938-04-04
Method for Manufacturing Straw Asphalt Slabs.
DK50621C
(en )
1935-09-02
Method for Manufacturing Concrete Roads.
DK55213C
(en )
1938-09-12
Method for Manufacturing Insulating Light Stone Masses.
DK48899C
(en )
1934-06-18
Method for Manufacturing Asphalt Concrete for Cold and Hot Laying.
DK46840C
(en )
1933-01-30
Method for Manufacturing Roofing Paper with a Metallic Surface.
DK50888C
(en )
1935-11-11
Method for Manufacturing Straw Asphalt Slabs.
DK53901C
(en )
1937-11-22
Procedure for Laying Roofing felt.
DK51668C
(en )
1936-05-25
Procedure for Repairing Building Timber.
DK54680C
(en )
1938-05-02
Method for Manufacturing Seamless Roofing.
DK48313C
(en )
1934-01-29
White Cement Manufacturing Device.
DK51473C
(en )
1936-03-30
Method for Making a Fast-Acting Yeast.
DK51700C
(en )
1936-06-02
Method for Manufacturing Seamless Tiles and Slabs.
DK50275C
(en )
1935-05-27
Procedure and Device for Manufacturing Ignition Cords.
DK48876C
(en )
1934-06-18
Roofing.
DK53286C
(en )
1937-07-05
Method for Manufacturing Insulating Light Stone.
DK48655C
(en )
1934-04-23
Method and Device for Making White Cement.
FI15075A
(en )
1933-04-07
Method for preventing the formation of asphalt in petrol