|
| US4205693 | 6 Feb 1979 | 3 Jun 1980 | | Wig |
| US4865057 | 28 May 1987 | 12 Sep 1989 | | Apparatus and method for making hairpieces undetectable |
| US5060677 | 1 Dec 1988 | 29 Oct 1991 | | Method for construction of hairpiece and article thereof |
| US5851079 | 25 Oct 1996 | 22 Dec 1998 | The Procter & Gamble Company | Simplified undirectional twist-up dispensing device with incremental dosing |
| US7797070 | 12 Jan 2009 | 14 Sep 2010 | CenterTrak, LLC | System and method for the digital specification of head shape data for use in developing custom hair pieces |