This patent “sexed up” the window shopping experience. 

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Patent Details:
Patent Title – Means for nullifying or reducing window reflections
Patent Number – US 1911881 A
Publication number – US1911881 A
Publication date – 30 May 1933
Filing date – 13 Apr 1931
Priority date – 23 Jul 1930
Inventors – Gerald Brown

Patent Abstract: This invention relates to means for nullifying or reducing window reflections and is particularly applicable to shop windows behind which goods are to be displayed.
Great inconvenience has been caused particularly in shops whose depth is considerable, as in showrooms for example, owing to the fact that external reflections on the glass window are so pronounced that the goods displayed cannot be seen properly from the outside.
The object of the invention is to provide means whereby troublesome reflections are avoided.