FR718089A
(en )
1932-01-19
Production of symmetrical 1.4-dioxyethylaminoanthraquinones
SU31070A1
(en )
1933-07-31
The method of manufacture of electronic devices
SU26390A1
(en )
1932-05-31
The method of obtaining tanning extracts
SU28935A1
(en )
1933-01-31
Microphone
GR2511B
(en )
1929-11-15
METHOD OF MANUFACTURE OF EMERALS AND SIMILAR.
GR3515B
(en )
1932-01-29
IMPROVEMENTS OF LEATHER TYPES AND METHOD OF MANUFACTURING THEM.
ES120124A1
(en )
1931-01-01
Method of manufacturing stops.
GR2694B
(en )
1930-03-27
METHOD OF DECOLATING FATS AND OILS.
GR2857B
(en )
1930-08-04
NEW EXPLOSIVE MATERIAL AND METHOD OF MAKING IT.
GR2276B
(en )
1929-04-23
METHOD AND ORGANIZATION OF IRROGATION.
FR689794A
(en )
1930-09-11
Unbreakable and artistic ceiling
FR713488A
(en )
1931-10-28
Bearing
GR3029B
(en )
1930-12-11
WAY OF ARTISTIC PROCESSING AND DECORATION OF CRYSTALS.
FR691592A
(en )
1930-10-23
Phonograph
ES121110A1
(en )
1931-01-16
Method of manufacturing metal furniture.
FR688864A
(en )
1930-08-29
Bracelet
DK35392C
(en )
1925-12-21
Procedure for Lighting and Manufacture of Lighting Advertising and the Like.
GR3013B
(en )
1930-12-04
PERFECTED METHOD OF MANUFACTURING ARTIFICIAL MARBLES AND STONES.
FR698363A
(en )
1931-01-30
Hourdis and its applications
GR2100B
(en )
1929-01-05
METHOD OF MANUFACTURING OCHRAS AND ITS INDUSTRIAL LAYOUT.
ES118170A1
(en )
1930-06-16
Process of manufacturing imitations of polychrome goldsmiths.
GR2359B
(en )
1929-07-05
METHOD FOR MANUFACTURE OF OBJECTS WITH COLDED POLISHED CONSTRUCTIONS.
FR711296A
(en )
1931-09-07
Manufacture of thiuram-monosulfides
ES119194A1
(en )
1930-09-01
An improved process and its corresponding apparatus for the manufacture of wired glass.
FR705864A
(en )
1931-06-16
Capstan