Number | Name | Date | Kind |
---|---|---|---|
3814938 | Martone et al. | Jun 1974 | |
4187427 | Cusano | Feb 1980 | |
4284891 | Pergrale et al. | Aug 1981 | |
4532425 | Abileah et al. | Jul 1985 | |
4658141 | Wilt et al. | Apr 1987 | |
5616924 | Petriillo | Apr 1997 |
Entry |
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Laser Focus World, Jun. 1996, High-Power transmission grating, p. 148. |
Polaroid Imagix.TM. Holographic Reflectors advertisement, (date unknown). |