B64C 1/28

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Patent/Pub #TitleFiling DateIssue/Publication DatePatent Owner
2020/0140,057 UNMANNED AERIAL VEHICLESep 19, 19May 07, 20PRODRONE CO., LTD.
2019/0092,447 MULTIROTOR AIRCRAFTAug 01, 18Mar 28, 19Not available