Patent
Patentdatenbank Finnland
1869
1887
1895
1900
1901 1903 1904 1907 1908 1909 1910
1911 1912 1914 1915 1916 1919 1920
1921 1922 1923 1924 1925 1931
1933 1936 1937 1938 1939 1940
1942 1943 1945 1947 1948 1950
1951 1952 1953 1954 1956 1958 1959 1960
1962 1963 1964 1965 1968 1971