CH138432A
(en )
1930-02-28
Method of operating high frequency furnaces.
CH127227A
(en )
1928-08-16
Method of cleaning laundry without boiling it.
AT109183B
(en )
1928-03-26
Culture process.
AT112334B
(en )
1929-02-25
Process for desulfurizing viscose silk.
AT121520B
(en )
1931-02-25
Method for tempering railway tracks.
AT104557B
(en )
1926-11-10
Method of dressing seeds.
AT107042B
(en )
1927-08-10
Process for repairing the worn guardrails of grooved rails.
AT121405B
(en )
1931-02-25
Process for drying fuels.
AT108210B
(en )
1927-12-10
Process for the operation of absorption chillers.
AT109164B
(en )
1928-03-26
Method for weighing rayon.
AT107437B
(en )
1927-10-10
Method of decorating fabrics.
NL23343C
(en )
1931-01-15
MINERAL TANNING METHOD
AT116490B
(en )
1930-02-25
Procedure for testing and commissioning power lines.
CH131633A
(en )
1929-02-28
Method of drying wood.
AT121534B
(en )
1931-02-25
Method for weighing natural silk.
AT116527B
(en )
1930-02-25
Process for preparing, heating up and starting up contact furnaces.
AT121536B
(en )
1931-02-25
Method of etching printing wool.
AT98978B
(en )
1925-01-10
Method and device for operating regenerative gas ovens.
AT107000B
(en )
1927-08-10
Method and furnace for coking coal.
FR637552A
(en )
1928-05-03
Heating method
CH138410A
(en )
1930-02-28
Procedure for operating steam generators.
FR648205A
(en )
1928-12-06
Metallurgical process
ES82488A1
(en )
1923-02-01
Procedure and apparatus for improving the operation of melting furnaces.
AT96110B
(en )
1924-02-25
Procedure for starting and operating synchronized asynchronous motors.
CA272244A
(en )
1927-07-12
Method of treating hydrocarbon