Table schema:
CREATE TABLE table_26389588_1 (primary_cartridge VARCHAR, year_of_introduction VARCHAR, country_of_origin VARCHAR)

Question: If the Country of Origin is Denmark and the year of introduction is 1962, what is the primary cartridge?
SQL: SELECT primary_cartridge FROM table_26389588_1 WHERE year_of_introduction = "1962" AND country_of_origin = "Denmark"