CREATE TABLE table_35040 ("Name" TEXT, "Year" FLOAT, "Propulsion" TEXT, "launched by" TEXT, "Country" TEXT)

What is the propulsion for the RB 04 earlier than 1962?
SELECT "Propulsion" FROM table_35040 WHERE "Year" < '1962' AND "Name" = 'rb 04'
SELECT "Propulsion" FROM "table_35040" WHERE "Name" = 'rb 04' AND "Year" < '1962'