13 : TRW Inc.|American companies established in 1958|Manufacturing companies established in 1958|Technology companies established in 1958|Manufacturing companies disestablished in 1965|1958 establishments in California|1965 disestablishments in California|Manufacturing companies based in Los Angeles|Defunct companies based in the Greater Los Angeles Area|Technology companies based in the Greater Los Angeles Area|History of the San Fernando Valley|Canoga Park, Los Angeles|West Hills, Los Angeles