Below you can find logos, similar to the 3com 30.

Dainese 30 Dainese 30 vector
Sachs 30 Sachs 30 vector
Maxtor 300 Maxtor 300 vector
Red Bull Junior Team F3000 Red Bull Junior Team F3000 vector
Gallina Blanca 30 Gallina Blanca 30 vector
Alpine 302 Alpine 302 vector
XJR1300 XJR1300 vector
FKI 130 FKI 130 vector
Australian Institute of Sport 307 Australian Institute of Sport 307 vector
30 ton 24 30 ton 24 vector
3Com 33 3Com 33 vector
Novotel 130 Novotel 130 vector
Mitsubishi 308 Mitsubishi 308 vector
Kendall 130 Kendall 130 vector
Pittsburgh Penguins 130 Pittsburgh Penguins 130 vector