Offenlegungsschrift 2023 377
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Offenlegungsschrift 2023 377 des deutschen Patentamts, 1971: Verfahren zur räumlichen Wiedergabe von Schallsignalen mittels Lautsprecher und Vorrichtung zu seiner Durchführung.
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Original from
Private estate of Ralf Kürer
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CC-BY-SA Users may share and adapt this material, even for commercial purposes. Appropriate credit must be given and an indication included if changes were made. Adapted versions must be distributed under the same license as original.
Digitization by
Stefan Krebs
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CC-BY-SA Users may share and adapt this material, even for commercial purposes. Appropriate credit must be given and an indication included if changes were made. Adapted versions must be distributed under the same license as original.