Process and equipment for the cementation of steel alloys, particularly of details made of steel alloy
HUT44344A
Process-control arrangement, preferably for arc-furnace steel-making
HUT40252A
Evaporation-cooled door frame advantageously for openhearth furnace of maerz-boelens system
HUT37493A
Method and apparatus for producing high-temperature molten metal particularly iron
HUT36299A
Circuitry for doubling of frequency with a space factor of 50%, particularly for static inverters
DD215957A5
Method for the interoperation of the seam quality, the marking of the errors on the workpiece and the certification of the quality of the welding
HUT35850A
Method and device for testing quality of the welds by videoradiography
HU181757B
On the single printed circuit card of normal size, favourably of ucs /eszr/ size built microcomputer with the i-8080 /or with this equivalent/ central unit
HU182194B
Vall-isolating element from metal-coated fibrous materials first of all for thermal insulation of valls of boilers and furnaces
HU183137B
Recuperative gas burner of plate flame
HU180581B
Recuperator,preferably for industrial furnaces
HU178854B
Rectified,reversing drive supplied from alternating current mains brakeable in both rotation sense advantageously for motor control gear of arc furnace
HU176693B
Electric resistance furnace whieheasy to built and repair
HU174600B
Electric resistance heated furnace, preferably for heat treatment
DE2438060A1
LOW PRESSURE CASTING EQUIPMENT
HU172815B
Apparatus for controlling the output of arc-furnace
