Hospital bed cycle
1946
1946
1946
1948
1946
1948
1947
1950
1950
circa 1950
1946
1949
1947
circa 1950
1950
1948
1950
1948
1955; 1830
1949
2000-100 BCE
1946
1938 and 1951
1946-1948
1948
circa 1950
circa 1950
1948
1990-96
1950
1949
1950
1948
1801-1892 (prepared); 1946 (element replaced)
1946-1948
1948
1947
1949
1950
circa 1947
1949
1947
1948
1947
1903 (original); 1982 (model)
1950
1946-1950
1830 (original); 1967 (model)
1950
1950
1947-1948