`The Patent Linguistics Utility System (PLUS) is a USPTO automated search system
`for US. Patents from 1971 to the present PLUS is a query-by-example search system which
`produces a list of patents that are most closely related linguistically to the application
`searched. This search was prepared by the staff of the Scientific and Technical Information
`Center, SIRA.
`
`12289669
`
`4587001 98
`
`5684365 99
`4245278 99
`4289800 99
`4301041 99
`4383897 99
`4420737 99
`4448647 99
`4464447 99
`4869789 99
`4949064 99
`4996124 99
`5278704 99
`5298290 99
`5367180 99
`5448421 99
`5497775 99
`5550066 99
`5655886 99
`5731047 99
`5828181 99
`6069442 99
`6171715 99
`6224653 99
`6224653 99
`4243862 98
`4252414 98
`4275834 98
`4290041 98
`4297250 98
`4369238 98
`4374160 98
`4383644 98
`4399021 98
`4410585 98
`4427369 98
`4434213 98
`RE31532 98
`4452674 98
`4460624 98
`4463075 98
`4478571 98
`4509527 98
`4522771 98
`4530595 98
`4550273 98
`4572900 98
`4573768 98
`4578156 98
`4581290 98
`
`
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