DK31844C
(en )
1923-06-11
Procedure and arrangement for the operation of cupola furnaces and other shaft melting furnaces.
FR512892A
(en )
1921-02-02
Annealing furnace
ES76566A3
(en )
1921-02-16
Blast furnace slag bricks.
DK28438C
(en )
1921-09-19
Procedure and Furnace for the Production of Bound Nitrogen.
DK33347C
(en )
1924-06-10
Procedure for masonry of regenerator furnaces.
FR501331A
(en )
1920-04-09
Muffle furnace
DK34092C
(en )
1925-02-02
Procedure for the production of ferro-chromium and other ferro-alloys.
CH93620A
(en )
1922-03-16
Melting furnace.
ES70330A1
(en )
1919-08-01
Furnace pokers improvements.
FR502187A
(en )
1920-05-06
Bogie hearth furnace
DK29980C
(en )
1922-07-24
Refractory Cabinet and Procedure for Manufacturing the Same.
DK35252C
(en )
1925-11-09
Tunnel cooling furnace for annealing glassware.
CH83389A
(en )
1919-12-01
Arc furnace
ES68600A1
(en )
1919-02-01
Improvements in furnaces or cupolas.
DK27434C
(en )
1921-04-11
Cement bricks as well as Machine and Procedure for Manufacturing the same.
DK25002C
(en )
1919-09-15
Cement bricks as well as Machine and Procedure for Manufacturing the same.
DK23177C
(en )
1918-06-24
Procedure for heating flame ovens and similar periodic ovens.
DK26212C
(en )
1920-06-28
Apparatus for controlling the temperature of incandescent iron and steel.
FR569835A
(en )
1924-04-18
Improvements to linings for furnaces, crucibles, etc.
DK30213C
(en )
1922-09-11
Procedure for the manufacture of detonators.
ES76815A1
(en )
1921-03-16
Procedure for the operation of cupola furnaces, mainly blast furnaces.
DK23731C
(en )
1918-11-18
Method and Device for Smelting Metal.
FR504821A
(en )
1920-07-17
Furnace
FR525466A
(en )
1921-09-22
Furnace
CH82931A
(en )
1919-11-01
Furnace