US2460896A
(en )
1949-02-08
Composition for blackening copper and copper alloy surfaces
US2500673A
(en )
1950-03-14
Process of producing a phosphate coating on metals high in aluminum
US3649371A
(en )
1972-03-14
Coatings for steel
SU411173A1
(enExample )
1974-01-15
US2011579A
(en )
1935-08-20
Intensified hydrochloric acid
GB1492068A
(en )
1977-11-16
Method for removing sulphur dioxide from an exhaust gas
US2846343A
(en )
1958-08-05
Product and method for effecting a cold chemical oxidation of aluminum and its alloys
GB1247082A
(en )
1971-09-22
Oxalate conversion coating method
US1875982A
(en )
1932-09-06
Prevention of corrosion
US2257440A
(en )
1941-09-30
Hardening photographic materials
NO792702L
(no )
1980-02-22
Fremgangsmaate ved fremstilling av furanforbindelser
US1895568A
(en )
1933-01-31
Rust proofing iron and steel articles
ES452324A1
(es )
1977-12-16
Un procedimiento mejorado para tenir fibras textiles de al- godon o de celulosa regenerada.
US2352076A
(en )
1944-06-20
Process for the protection of magnesium and magnesium base alloys against corrosion
US1969678A
(en )
1934-08-07
Ferric chloride etching solutions
US2066181A
(en )
1936-12-29
Production of protective coating on aluminum and noncuprous alloys thereof
GB1180951A
(en )
1970-02-11
An Improved Method of Providing the Surface of Steel with a Corrosion-Resistant Film.
SU396455A1
(ru )
1973-08-29
Паста для очистки металлической поверхности
SU390196A1
(ru )
1973-07-11
ЁИал^О7-ЕЯА
US2863791A
(en )
1958-12-09
Production of oxalate coatings on iron and steel
SU565053A1
(ru )
1977-10-20
Состав дл химического травлени алюмини
SU990873A1
(ru )
1983-01-23
Раствор дл химического окрашивани меди
SU392165A1
(enExample )
1973-07-27
SU433000A1
(ru )
1974-06-25
Флюс для пайки
SU730871A1
(ru )
1980-05-03
Водный раствор дл контактного меднени