US Patent Issued on July 21 for "Filter device for compressed air" (Chinese Inventor)

ALEXANDRIA, Va., July 21 -- United States Patent no. 12,685,955, issued on July 21.

"Filter device for compressed air" was invented by Yinqiao Shi (Yueqing, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "A filter device for compressed air, including: a first filter assembly having a first air inlet and a first air outlet. A second filter assembly having a second air inlet and a second air outlet, the second air inlet is in fluid communication with the first air outlet. A third filter assembly having a third air inlet and a third air outlet, the third air inlet is in fluid communication with the second air outlet, and the third air outlet is configured to discharge filtered compressed air for use. An ai...