The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 30, 2009
Filed:
Jan. 24, 2008
Wesley P. Marquardt, Fowler, IL (US);
Tyler P. Marquardt, Quincy, IL (US);
Wesley P. Marquardt, Fowler, IL (US);
Tyler P. Marquardt, Quincy, IL (US);
Other;
Abstract
An appliance for a room door serves to display a message at both the inside and outside faces of the door and further enables one at the inside face to observe individuals and activities beyond the outside face. The appliance includes an interior unit against the inside face of the door, an exterior unit against the outside face of the door, an operating shaft extending through the door and between the two units, and a viewer that extends through the operating shaft and clamps the units against their respective faces of the door. Each unit has a cover provided with a window and a message wheel, a portion of which is exposed for viewing through the window in its cover. The message wheels are engaged with the operating shaft, so that they rotate in unison and display like messages through the windows in the covers of their respective units.