CH234834A
(en )
1944-10-31
Lathe.
SU54825A1
(en )
1938-11-30
The method of processing cedar pencil tablets
SU54822A1
(en )
1938-11-30
The method of processing cedar plates for the manufacture of pencils
CH217588A
(en )
1941-10-31
Lead collector.
SU55611A1
(en )
1938-11-30
The method of obtaining aromatic oxaldehyde
SU55551A1
(en )
1939-08-31
The method of obtaining sulfur dyes
SU54541A1
(en )
1938-11-30
A method of making incendiary electrodes for electrovacuum devices of the type of ignatrons
SU55278A1
(en )
1938-11-30
Method for making blueprint paper
SU54814A1
(en )
1938-11-30
The method of obtaining food acetic acid
SU55132A1
(en )
1938-11-30
The method of applying a silver layer on mica, mainly in the manufacture of mica capacitors
SU55045A1
(en )
1938-11-30
Glasses
SU55556A1
(en )
1939-09-30
Germanium production method
SU54634A1
(en )
1938-11-30
Ceramic insulation material
SU54709A1
(en )
1938-11-30
The method of obtaining acetic acid from wood powder
SU54620A1
(en )
1938-11-30
The method of heat treatment of spiral springs
SU55542A1
(en )
1938-11-30
Method for making abrasive products
CH236494A
(en )
1945-02-15
Negative feedback amplifier.
SU54327A1
(en )
1937-11-30
A method of manufacturing a constant capacitor
SU63437A1
(en )
1943-11-30
Beryllium bronze
CH222385A
(en )
1942-07-15
Footrest.
CH217087A
(en )
1941-09-30
Neutralized amplifier circuit.
DK59391C
(en )
1942-01-12
Collapsible Buck, especially for Tables.
GR7830B
(en )
1938-12-05
LIGNITE PROCESSING METHOD.
DK57436C
(en )
1940-04-01
Camp bed that can be converted into Baare.
CH202878A
(en )
1939-02-15
Multiple pen.