|-
| style="background-color:#99ccff;;padding:0.079cm;"| <center>'''9'''</center>
| style=";padding:0.079cm;"| <center>US4762705 [http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PALL&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.htm&r=1&f=G&l=50&s1=4762705.PN.&OS=PN/4762705&RS=PN/4762705] </center>
| style=";padding:0.079cm;"| <center>8/9/1988</center>
| style=";padding:0.079cm;"| <center>Schwimmer, Adolf W. | Schwartz, Irwin Steven | Rubin, David</center>