74069509
Jun 13, 1990
Feb 23, 1993
conductors for electromagnetic waves, wave guides, and resonating cavities and component elements for such electromagnetic wave conductors, wave guides and resonating cavities; electromagnetic wave reflecting devices; impedance matching devices; devices for connection between coaxial cables and conductors for electromagnetic waves, wave guides and resonating cavities; end devices for conductors for electromagnetic waves, wave guides and resonating cavities; devices for connection between such component elements of conductors for electromagnetic waves, wave guides and resonating cavities; junction devices for electromagnetic wave conductors, wave guides and resonating cavities; switching devices for electromagnetic wave conductors, wave guides and resonating cavities; filters for electromagnetic wave conductors, wave guides and resonating cavities; electromagnetic wave devices for determining electric properties of materials; computer software for determining properties of material using electromagnetic waves
Electrical and Scientific Apparatuscomputer programming services; computer engineering services; and determining electromagnetic properties of materials using electromagnetic waves
Computer and Scientific