SU31085A1
(en )
1933-07-31
The method of cleaning smoke tubes from soot
FR733482A
(en )
1932-10-06
Spark plug
SU31015A1
(en )
1933-07-31
Method for producing isopropenylacetylene
SU31022A1
(en )
1933-07-31
The method of separation of acetic acid from wood powder
SU31135A1
(en )
1933-07-31
The method of obtaining hard alloy
SU31095A1
(en )
1933-07-31
The method of obtaining the bubbly products
SU31103A1
(en )
1933-07-31
The method of making glass limbs
SU31133A1
(en )
1933-07-31
The method of obtaining refined copper
SU31017A1
(en )
1933-07-31
The method of obtaining dimethylacetylene carbinod
SU29040A1
(en )
1933-01-31
Method of making blanks of blanks
SU31245A1
(en )
1933-07-31
The method of obtaining clinker cement
SU32381A1
(en )
1933-09-30
Acoustic signaling device
SU31016A1
(en )
1933-07-31
The method of producing chlorisoprene and its polymerization products
SU29215A1
(en )
1933-02-28
The method of obtaining resins
SU46406A1
(en )
1936-03-31
Stuffing box
SU31008A1
(en )
1933-07-31
The method of obtaining hydrochloric alcohol
SU32155A1
(en )
1933-09-30
A method of manufacturing products from PCB
SU31178A1
(en )
1933-07-31
The method of isolation of seeds from grape marc
SU28413A1
(en )
1932-11-30
Shot muffler
SU31021A1
(en )
1933-07-31
The method of producing tetraoxyperylene or their derivatives
SU29169A1
(en )
1933-02-28
The method of obtaining the filter material
FR797746A
(en )
1936-05-02
Chimney sweeper for boilers
FR805068A
(en )
1936-11-10
Soot trap
DK53143C
(en )
1937-05-31
Soot blower.
FR617616A
(en )
1927-02-23
Assembly method, at the end, of a single tube with a series of tubes