Difference between revisions of "Patent for Improvements in and relating to sound-transmission, sound-recording and sound-reproducing systems (Q38982)"
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(Created claim: Copy available online (P37): https://worldwide.espacenet.com/patent/search/family/010368359/publication/GB394325A?q=pn%3DGB394325A) |
(Created claim: mentions (P78): stereo sound (Q38983)) |
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| + | 14 June 1933
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Latest revision as of 09:48, 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
