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  US3628252A - Drafting apparatus - Google Patents

  http://www.google.de/patents?vid=USPAT3628252&id=CK4sAAAAEBAJ&dq=%22DIN+6775%22&num=100

  A drafting apparatus comprises a support mounted for predetermined movement above and with reference to a paper on which drafting is to take place. A plurality of drafting pens are provided each of which has a line-forming contact portion of…

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  US2735900A - hans-christoph wohlrab etal - Google Patents

  http://www.google.de/patents/US2735900

  Keine Beschreibung vorhanden.

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  US5098013A - Single slice pizza carrier - Google Patents

  http://www.google.de/patents?id=hxgqAAAAEBAJ&printsec=abstract&zoom=4#v=onepage&q&f=false

  A tray for transporting a single slice of pizza while facilitating use of the tray as a support so that the piece of pizza can be removed from and repositioned on the tray during eating thereof. The tray includes a generally triangular bottom wall…

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