Japan, Nov. 7 -- SIGMA CORP has got intellectual property rights for 'INNER-FOCUS OPTICAL SYSTEM.' Other related details are as follows:
Application Number: JP,2021-138225
Category (FI): G02B13/04@C,G02B13/18,G02B13/04
Stage: Grant (IP right document published.)
Filing Date: Aug. 26, 2021
Publication Date: March 9, 2023
The original document can be viewed at: https://www.j-platpat.inpit.go.jp/p0100
Disclaimer: Curated by HT Syndication....