Calgary
Canada
7
2019-06-06
The entities that hold a legal rights for patent applications filed by inventor Li Zhigang:
Zhigang Li from Calgary, CA has applied for patents for these inventions. The list has both pending applications and granted patents:
ASSISTIVE TECHNOLOGY FOR THE IMPAIRED
#2 | 2016-12-22Assistive technology for the impaired
#3 | 2016-08-25Assistive technology for the impaired
#4 | 2016-03-10Assistive technology for the visually impaired
#5 | 2015-05-07Assistive technology for the visually impaired
#6 | 2014-07-03Assistive technology for the visually impaired
#7 | 2011-10-13Automated assistive technology for the visually impaired
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