Table:
text: Portuguese National Badminton Championships
Past winners
Past winners
Year_ Men_s_singles Women_s_singles Men_s_doubles Women_s_doubles Mixed_doubles
1968 Jose Bento Peggy Brixhe Rui Damasio Jose Azevedo Peggy Brixhe Isabel Salema Jose Azevedo Isabel Rocha
1969 Jose Bento Peggy Brixhe Alegre dos Santos Monge Dias no competition Jose Azevedo Isabel Rocha
1970 Jose Bento Isabel Rocha Jose Bento Marques Costa no competition Jose Bento Isabel Rocha
1971 no data no data Jose Bento Marques Costa Peggy Brixhe Lavinia Pais Pinto Alves Peggy Brixhe
1972 Jose Bento Peggy Brixhe Jose Bento Marques Costa Isabel Rocha Isabel Pinto Jose Bento Isabel Rocha
1973 Jose Bento Isabel Rocha Jose Bento Marques Costa Isabel Rocha Isabel Pinto Jose Bento Isabel Rocha
1974 Jose Bento Isabel Rocha Jose Bento Marques Costa Margarida Cruz Isabel Cruz Jose Bento Isabel Rocha

text: Portuguese National Badminton Championships
Past winners
Past winners
Year_ Men_s_singles Women_s_singles Men_s_doubles Women_s_doubles Mixed_doubles
1962 no competition no competition Ramiro Correia Alegre Santos no competition Jorge Gomez Isabel Cabral
1963 Alegre Santos Isabel Cabral Rui Damasio Mario Mateus Emilia Carneiro Maria Jose Guimaraes Jose Azevedo Isabel Rocha
1964 Alegre Santos Isabel Rocha Fernando Pinto Vitor Pinto Alves no competition Alegre Santos Isabel Rocha
1965 Alegre Santos no competition Rui Damasio Mario Mateus Isabel Pinto Isabel Rocha Fernando Pinto Peggy Brixhe
1966 Jose Novais Isabel Rocha Fernando Pinto Vitor Da Costa Conceicao Felizardo Isabel Rocha Alegre Santos Isabel Rocha
1967 Alegre Santos Isabel Rocha Jose Bento Marques Costa Conceicao Felizardo Isabel Rocha Jose Azevedo Isabel Rocha

text: Portuguese National Badminton Championships
Past winners
Past winners
Year_ Men_s_singles Women_s_singles Men_s_doubles Women_s_doubles Mixed_doubles
1975 Jose Bento Isabel Rocha Francisco Lemos Guilherme Trindade Margarida Cruz Isabel Cruz Jose Bento Isabel Rocha
1976 Luis Quinaz Isabel Rocha Jose Bento Marques Costa Isabel Rocha Ana Margarida Guilherme Trindade Isabel Rocha
1977 Joso Braz Isabel Rocha Jose Bento Cristiano Dias Helena Sousa Serafina Brandao Jorge Cruz Ana Monteiro
1978 Antonio Monge Dias Anna Monteiro Jose Bento Jorge Cruz Margarida Cruz Isabel Cruz Jorge Nogueira Teresa Lesl
1979 Jose Bento Anna Monteiro Jose Bento Jorge Cruz Ana Monteiro Isabel Rocha Jose Pessoa Isabel Rocha
1980 Jose Pessoa Margarida Cruz Jose Bento Marques da Costa Ana Monteiro Isabel Rocha Jose Bento Ana Monteiro

Question: When did the 1970 Isabel Rocha women's mixed doubles and Isabel Rocha Ana Margarida women's doubles at the Portuguese national badminton championships take place?