BE426219A - - Google Patents

Info

Publication number

BE426219A

BE426219A BE426219DA BE426219A BE 426219 A BE426219 A BE 426219A BE 426219D A BE426219D A BE 426219DA BE 426219 A BE426219 A BE 426219A

Authority

BE

Belgium

Prior art keywords

sound

recording

exposure

film

sound waves

Prior art date

Links

• Espacenet
• Global Dossier
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