CH167563A
(en )
1934-02-28
A process for the production of oxygen-poor steel.
FR753036A
(en )
1933-10-05
Asphalt manufacturing process
FR755143A
(en )
1933-11-20
Process for the production of auxiliary agents for the textile industry, etc.
FR755118A
(en )
1933-11-20
Manufacturing process for metal articles
FR778640A
(en )
1935-03-21
Manufacturing process for low-oxygen steel
BE397280A
(en )
1933-07-31
Manufacturing process for flooring
FR807236A
(en )
1937-01-07
Process for the production of steel conveyor belts
FR825862A
(en )
1938-03-16
Process for manufacturing hard metal bushes such as steel
FR773805A
(en )
1934-11-26
Process for manufacturing molten steel tools
FR825699A
(en )
1938-03-10
Process for the production of Thomas steel
FR767047A
(en )
1934-07-09
Machine for the production of steel shavings
FR830217A
(en )
1938-07-25
Steel making process
FR755117A
(en )
1933-11-20
Manufacturing process for metal articles
FR755119A
(en )
1933-11-20
Manufacturing process for metal articles
FR755116A
(en )
1933-11-20
Manufacturing process for metal articles
FR825908A
(en )
1938-03-17
Process for the production of steel
FR750842A
(en )
1933-08-19
Production process for aromatic aldehydes
ES128937A1
(en )
1933-02-16
A manufacturing process for hollow ingots.
FR816182A
(en )
1937-08-02
Improvements to metal cans or stagnants, and process for the manufacture thereof
FR808692A
(en )
1937-02-12
Process for making special steel by adding sulfur
FR868471A
(en )
1941-12-31
Process for the direct production of steel
FR758750A
(en )
1934-01-22
Process for the production of high emission cathodes
FR748594A
(en )
1933-07-06
Process for the production of yeast
FR751120A
(en )
1933-08-28
Process for the manufacture of metal propellers
FR825909A
(en )
1938-03-17
Thomas steel manufacturing process