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Patent for sound volume control device. Patent number 3902398 was created in 1975 for a volume control device.MyPatentAssets — Patent Search by Number: 4,925,432
Easily access free patent information, as well as additional paid-for information, in the ultimate patent data dashboard by searching by the patent number 4,925,432, which is a patented belt-type continuously variable transmission and engine speed control device therefore.Patent for record carrier
One of the patents from Phillips in the patenting of Blu Ray discs is patent number 5,732,065. This patented an optical information carrier with different density layers.Try My Patent Assets for any of your patent data needs and let us light your path.
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