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Expired
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Thomas Higginson
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Individual
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Individual
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Publication of GB190504928ApublicationCriticalpatent/GB190504928A/en
4928. Higginson, T. March 9. Windows, swivelling-sliding. To facilitate cleaning, the glass is carried in a frame B mounted on central vertical pivots W within a sliding frame A. The frame B is secured within the frame A by flaps 0 hinged to sash A and secured together by bolts x.