Difference between revisions of "Patent for Improvements in and relating to sound-transmission, sound-recording and sound-reproducing systems (Q38982)"
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(Removed claim: Source URL (P64): https://worldwide.espacenet.com/patent/search/family/010368359/publication/GB394325A?q=pn%3DGB394325A) | (Created claim: Publication date (P40): 14 June 1933) | ||||||||||||||
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| + | 14 June 1933
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Revision as of 09:42, 2 July 2025
patent for stereo concept and sterio (record) recording
- GB394325A
| Language | Label | Description | Also known as |
|---|---|---|---|
| English | Patent for Improvements in and relating to sound-transmission, sound-recording and sound-reproducing systems | patent for stereo concept and sterio (record) recording |
|
Statements
14 June 1933
0 references