A kissing shield comprised of a thin, flexible membrane and a frame or holder.
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| Number | Title | Issue Date |
| 7373805 | Apparatus for directing particles in a fluid There is disclosed apparatus for directing particles entrained in a fluid, comprising a chamber having a first wall, including means for generating a sound wave having a frequency v, and a second, opposite wall capable of reflecting the sound wave in which the first... | 05/20/2008 |
| 6332541 | Particle manipulation An apparatus which manipulates particles suspended in a fluid includes a duct for the flow of the fluid in which the particles are suspended, and a mechanism for establishing an acoustic standing wave field across the width of the duct, the duct being for... | 12/25/2001 |