CPC Y10S244/904

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CPC Y10S244/904 is a category for patents associated with aero or astro control systems ? Check this. It seems not to be a regular category but a special one added to CPC.[1][2] Tech classification tree:

This wiki has 15 patents in category "CPC Y10S244/904". Other techtypes related to CPC Y10S244/904: CPC B64C13/00

Patents in category CPC Y10S244/904

References

Enclosing categories CPC Y10S, CPC Y10S244/00
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