| Number | Name | Date | Kind |
|---|---|---|---|
| 241748 | Strauss | May 1881 | |
| 1843814 | Hallowell et al. | Feb 1932 | |
| 2806514 | Smith | Sep 1957 | |
| 3312503 | Suzuki | Apr 1967 | |
| 3331634 | Harrison, Jr. | Jul 1967 | |
| 3422938 | Worcester | Jan 1969 | |
| 3627086 | Caigan | Dec 1971 | |
| 4085970 | Klein | Apr 1978 | |
| 4567845 | Smith | Feb 1986 | |
| 4637081 | Clark | Jan 1987 | |
| 4693204 | Klein | Sep 1987 | |
| 4738217 | Smith | Apr 1988 | |
| 4826242 | Tretheway | May 1989 | |
| 4875737 | Cardenas | Oct 1989 | |
| 4919068 | Lathers | Apr 1990 | |
| 5190350 | Hwang et al. | Mar 1993 | |
| 5252373 | Ganske et al. | Oct 1993 | |
| 5408710 | Garman et al. | Apr 1995 |
| Entry |
|---|
| Introduction to Optics, Pedrotti, et al., "Two-Layer Antireflecting Films," Sec. 22-3, Prentice-Hall, Inc. 1987. |