Patent ID: 7972138

Claim:
A clipboard assembly having a clipboard main body having a first section and a second section, said first section being basically rectangular in shape and having an upper end and a lower end, a left side and a right side, said first section also having a flat upper surface that has a depressed portion extending from below a portion of said flat upper surface upper and lower ends, and extending at least to one of said first section's left and right sides and beyond the other of said first section's left and right sides so that said depressed portion is circular with an arcuate part removed beyond the one of said first sections's left and right sides when said flat upper surface depressed portion does not extend beyond the one of said first section's left and right sides, and a spring clip on said upper end of said clipboard main body first section; said clipboard assembly main body second section being a circular turntable with its upper surface being in the plane of the main body flat upper surface and its lower surface being in planar face relation to said depressed section, said flat upper surface of said turntable and said clipboard main body first section's being substantially the same plane and in position to receive thereon a paper sheet on which one or more sketches may be made; said clipboard assembly main body turntable's flat upper surface having a textured groove pattern which is usable to sketch on the paper sheet using with a tool that engages the paper top surface and moves a portion of the paper sheet over each groove into a particular groove selected by a sketcher to create a line on the top of the paper sheet that is the precise shape of said particular groove, and to do so with other lines using others of said grooves as needed to make at least a part of a desired sketch, including making such other lines on the paper sheet at different angles to each other by rotating said turntable within said depressed portion of said clipboard main body first section to attain any desired angle of such lines that are drawn relative to each other, and at least one raised registration mark on said clipboard main body first section, said at least one raised registration mark providing an index for the initial placement of a paper sheet over said upper surfaces of said first and second main body sections in a preset precise location on said clipboard main body first section and said section thereof to be drawn upon; said at least one raised registration mark also providing an index for the later replacement of the same paper sheet in said same preset precise location on said clipboard main body in a reproducible drawing manner after the paper has been drawn thereon and removed from the board main body, in said same precise same location on said clipboard main body for additional drawing thereon that is in precisely the same location relative to said main body first part that it occupied when it may have been previously drawn thereon.