On 3rd November 1914 a patent was granted to Mary Phelps Jacob for what invention, made from handkerchiefs and ribbon?

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The First World War saw innovations and inventions on the fields of battle with tanks, aeroplanes and poison gas all being developed.  There were also advances in the field of medicine brought about by the injuries suffered on the battlefields.


On 3rd November 1914 a patent was granted to Mary Phelps Jacob for what invention, made from handkerchiefs and ribbon?