Number | Name | Date | Kind |
---|---|---|---|
2239032 | Boch | Apr 1941 | |
2289272 | Kibbe | Jul 1942 | |
2645869 | Cook | Jul 1953 | |
2656758 | Cole | Oct 1953 | |
2934993 | Chromy | May 1960 | |
3171883 | Jones | Mar 1965 | |
3232302 | Methot | Feb 1966 | |
4577927 | Raney | Mar 1986 | |
4906083 | Sattler | Mar 1990 | |
5052802 | Hayes et al. | Oct 1991 | |
5144495 | Merton et al. | Sep 1992 | |
5757542 | Brock | May 1998 | |
5781338 | Kapitza et al. | Jul 1998 |
Entry |
---|
"Spectacle Lens Technology", D.F. Horne, M.B.E., 1978, p. 118. |
Brochure, "Progressive Addition Lens Identification Device", Optivision 1996. |