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Referenced by

Citing PatentFiling dateIssue dateOriginal AssigneeTitle
US395589426 Feb 197511 May 1976Koh-I-Noor Rapidograph, Inc.Tubular writing pen
US426952913 Nov 197826 May 1981Pen with articulate handle
US475354624 Jul 198128 Jun 1988Koh-I-Noor Rapidograph, Inc.Pressure balanced stylographic pen
US493092122 Dec 19885 Jun 1990Koh-I-Noor Rapidograph, Inc.Tubular writting pen with superposed pressure equalization chambers
USD55429112 Jul 200630 Oct 2007Cosmolab, Inc.Cosmetic eyeliner

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