|
DK5288C
(en)
|
|
Procedure for Treatment of Copper Ore.
|
|
DK4499C
(en)
|
|
Procedure for Mining Metals of Any Kind.
|
|
DK3845C
(en)
|
|
Procedure for Treatment of Compound, Sulfur-containing Ores.
|
|
DK4612C
(en)
|
|
Apparatus for Electrical Treatment of Chlorine.
|
|
DK5266C
(en)
|
|
Procedure for making Straatage refractory.
|
|
DK5172C
(en)
|
|
Procedure for Melting and Concentration of Unroasted Sulfide Ores.
|
|
CH25372A
(en)
|
|
Underwind furnace
|
|
CH25660A
(en)
|
|
Adder
|
|
CH23696A
(en)
|
|
Ploughman
|
|
DK5162C
(en)
|
|
Devices of an glow-making machine.
|
|
DK5177C
(en)
|
|
Procedure for the production of real adhesives.
|
|
DK4980C
(en)
|
|
Method of Making an Insulating Agent.
|
|
CH23741A
(en)
|
|
Registry facility
|
|
DK4538C
(en)
|
|
Procedure for Treating Eggs.
|
|
DK5075C
(en)
|
|
Method for Hardening Copper or Copper Alloys.
|
|
CH27166A
(en)
|
|
Advanced pelletizer
|
|
FR321539A
(en)
|
|
Metal drain
|
|
CH27668A
(en)
|
|
Roaster
|
|
AT23200B
(en)
|
|
Electric soldering process.
|
|
FR326461A
(en)
|
|
Advanced Projectile
|
|
ES29411A1
(en)
|
|
Furnace improvements.
|
|
FR1610E
(en)
|
|
Advanced tacheometer
|
|
FR327475A
(en)
|
|
Advanced tacheometer
|
|
FR328962A
(en)
|
|
Advanced ametropometer
|
|
CH25968A
(en)
|
|
Advanced calorifier
|