Derek Yakiwchuk

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Tokyo, JP

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Patents Applicationslast 30 patents

Information Patent Application
LANGUAGE PRACTICE DEVICE, LANGUAGE TEACHING MATERIAL, AND LANGUAGE...
- Publication number 20200410895
- Publication date Dec 31, 2020
- Derek Yakiwchuk
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
LANGUAGE PRACTICE DEVICE, LANGUAGE TEACHING MATERIAL, AND LANGUAGE...
- Publication number 20180211560
- Publication date Jul 26, 2018
- Derek Yakiwchuk
- G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS