Patents/Inventors

Yuan-fong Chang

TaoyuanTW5 patents

6 Patents

US124005092025
Bill Receiving Box
Top Vending Machine Electronics Co., Ltd.
0 cites
USD10696242025
Bill Receiving Box
Top Vending Machine Electronics Co., Ltd.
0 cites
USD10532462024
Barcode Printer
Top Vending Machine Electronics Co., Ltd.
0 cites
US119261492024
Printer
Top Vending Machine Electronics Co., Ltd.
0 cites
US118138552023
Barcode Printer
Top Vending Machine Electronics Co., Ltd.
0 cites
US115510212023
Counterfeit Paper Currency Detector with Barcode Reading Function
Top Vending Machine Electronics Co., Ltd.
0 cites