NL1757C
(en )
1917-01-15
Twist drill for deep drilling
DK24145C
(en )
1919-03-03
Drilling apparatus for the manufacture of vertical boreholes.
DK18128C
(en )
1913-11-24
Procedure and Apparatus for the Production of Various Hard and Durable X-Rays.
DK19765C
(en )
1915-02-01
Drilling cartridge for Borsving, Drills and the like.
DK17296C
(en )
1913-05-13
Procedure and Form for the manufacture of cork insulation stones and building construction parts.
DK20584C
(en )
1915-09-20
Method and Apparatus for the Production of Lead Oxide.
FR511286A
(en )
1920-12-21
scaffolding for the construction of wells
DK23219C
(en )
1918-07-01
Method and Apparatus for the production of aluminum chloride.
DK19858C
(en )
1915-02-22
Explosives and Procedures for the Manufacture of the same.
DK20454C
(en )
1915-08-23
Procedure and Apparatus for Converting Rock Salt to Use Salt.
DK19859C
(en )
1915-02-22
Mouthpiece for Retorts and the like.
DK20578C
(en )
1915-09-20
Method and Device for Manufacturing Hollow Stone with Screwed Inner Ribs.
DK19736C
(en )
1915-01-25
Apparatus for easily releasable Connection of inserted Construction, Tools and similar Parts.
DK23983C
(en )
1919-01-20
Procedure for the production of cement and for the extraction of potassium salts.
CH68531A
(en )
1915-03-16
drill
DK30922C
(en )
1922-12-11
Procedure for the Extraction of Hydrocarbons and Their Derivatives.
DK29197C
(en )
1922-01-23
Machine for the manufacture of pipes of cement and the like.
DK16752C
(en )
1912-12-09
Machine for the manufacture of glass jars and the like.
DK18822C
(en )
1914-05-18
Procedure for the production of nitro compounds from mixtures of petroleum and tar.
DK16390C
(en )
1912-09-16
Method for Making Matchboxes and the Like.
DK20223C
(en )
1915-06-14
Activating substance for the production of radioactive liquids and gases.
DK19459C
(en )
1914-11-02
Procedure for the production of paints and inks.
DK17131C
(en )
1913-03-31
Machine for the production of slate and the like.
DK21996C
(en )
1917-03-12
Method and Devices for the production of conical rollers with precise dimensions.
DK14660C
(en )
1911-06-06
Procedure and Device for the Production of Liquid Oxygen.