Weird Patent of the Day
Window-cleaning device.
A window-cleaning device for motor cars, operable from the inside of the vestibule, and easily removable when not required so that nothing mars the usual appearance of the car during fair weather. It is also meant to keep a uniform pressure upon the glass throughout the area swept by the cleaners.
Source: United States Patent and Trademark Office, www.uspto.gov. Official PDF: USPTO patent PDF. Also at Google Patents. The drawing on this page is a reduced copy of the official figure; see the original drawing.
