Ben hubberd Ben hubbardSir James Dewar invented the vacuum flask.
who invent the florence flask
flask
Sir James Dewar
Sir James Dewar
James Dewar
Sir James dewar .... I think
he invented it in 1892
it was made in 1892 by ben hebberd by Sarah wood bexhill
what is a flask for what is a flask for
measuring flask is a measuring flask
there was over 2000000 selled in the first year it was made.