Description :
Each column is linked condition AND
In one column you can select multiple values (CTRL+mouse), if this happens between the true values of condition OR

COUNTRY ---- All ---- Czechoslovakia Germany USA

PRODUCER ---- All ---- Auer Avec Chirana Medi (MLW) Protetika Sigma

TYPE ---- All ---- HM 380 Lix RC643 RE-3 RE-4 RE-5 respirator RU-20 s ústenkou s výd. ventilem S-97 sebezáchranný US M1

YEAR ---- All ---- 1943 1955 1956 1959 1964 1965 1974 1977 1979 1982 1985 1998

PERIOD ---- All ---- 1931 - 1945 1946 - 1960 1961 - 1989 1990 - 2024