CH305910A
(en )
1955-03-15
Device for displaying objects.
CH285035A
(en )
1952-08-31
Pest control methods.
CH290905A
(en )
1953-05-31
Process for the production of semi-pulp.
CH291994A
(en )
1953-07-31
Pest control methods.
CH282375A
(en )
1952-04-30
Process for the preparation of organohalosilanes.
CH292033A
(en )
1953-07-31
Process for the manufacture of spinnerets.
CH280487A
(en )
1952-01-31
Process for purifying water.
CH291166A
(en )
1953-06-15
Device for securing ties.
CH274839A
(en )
1951-04-30
Process for the recovery of platinum.
CH291800A
(en )
1953-07-15
Methods for purifying argon.
CH279908A
(en )
1951-12-31
Process for the preparation of alkylhalosilanes.
CH290305A
(en )
1953-04-30
Process for the regeneration of discolored polyacrylonitrile solutions.
CH281721A
(en )
1952-03-31
Method of making embroidery.
CH293169A
(en )
1953-09-15
Method and device for storing information.
CH281128A
(en )
1952-02-29
Procedure for purifying lactams.
CH272451A
(en )
1950-12-15
Device for changing the track width of vehicles.
AT172334B
(en )
1952-08-25
Process for the preparation of N-dialkylaminoalkylphenthiazines
AT170032B
(en )
1952-01-10
Process for the extraction of argon
CH284350A
(en )
1952-07-31
Process for the manufacture of spinnerets.
CH278946A
(en )
1951-11-15
Method for gluing surfaces.
CH295380A
(en )
1953-12-31
Process for the production of sausage casings.
AT169830B
(en )
1951-12-27
Process for the phosphating of metals
AT169202B
(en )
1951-10-25
Process for making tunnels
CH306066A
(en )
1955-03-31
Process for stabilizing polyvinyl acetals.
CH278601A
(en )
1951-10-31
Methods of soil improvement.