G01S- RADIO DIRECTION-FINDING RADIO NAVIGATION DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES ANALOGOUS ARRANGEMENTS USING OTHER WAVES.Assignors: GEBHARD, HERMANN, KOBBING, HEINZ Application granted granted Critical Publication of US4797548A publication Critical patent/US4797548A/en Anticipated expiration legal-status Critical Status Expired - Fee Related legal-status Critical Current Links reassignment FRAUNHOFER GESELLSCHAFT ZUR FORDERUNG DER ANGEWANDTEN FORSCHUNG E.V. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.) Filing date Publication date Application filed by Fraunhofer Gesellschaft zur Forderung der Angewandten Forschung eV filed Critical Fraunhofer Gesellschaft zur Forderung der Angewandten Forschung eV Assigned to FRAUNHOFER GESELLSCHAFT ZUR FORDERUNG DER ANGEWANDTEN FORSCHUNG E.V. Original Assignee Fraunhofer Gesellschaft zur Forderung der Angewandten Forschung eV Priority date (The priority date is an assumption and is not a legal conclusion.

Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)įraunhofer Gesellschaft zur Forderung der Angewandten Forschung eV Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.) Expired - Fee Related Application number US07/091,860 Inventor Heinz Kobbing Hermann Gebhard Current Assignee (The listed assignees may be inaccurate. Google Patents Reflection light bearer system with self-testing featureĭownload PDF Info Publication number US4797548A US4797548A US07/091,860 US9186087A US4797548A US 4797548 A US4797548 A US 4797548A US 9186087 A US9186087 A US 9186087A US 4797548 A US4797548 A US 4797548A Authority US United States Prior art keywords light measuring reflection emitter barrier according Prior art date Legal status (The legal status is an assumption and is not a legal conclusion. Google Patents US4797548A - Reflection light bearer system with self-testing feature US4797548A - Reflection light bearer system with self-testing feature

Instal LightBear free