Helen Augusta Blanchard: Vinte e Oito Patentes para uma Máquina de Costura Melhor
Helen Augusta Blanchard: Twenty-Eight Patents for a Better Sewing Machine
Helen Augusta Blanchard, de Portland, Maine, depositou vinte e oito patentes entre 1873 e 1915, incluindo um mecanismo de ponto em ziguezague que se tornou padrão na costura, construindo máquinas melhores por meio de refinamento incremental persistente em vez de uma única grande invenção.
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incremental invention
women inventors
sewing technology
mechanical refinement
patent history
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