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Paper protractor
Paper protractor









paper protractor

239000011521 glass Substances 0.000 abstract description 6.238000005259 measurement Methods 0.000 abstract description 8.238000000576 coating method Methods 0.000 claims description 7.

paper protractor

239000011248 coating agent Substances 0.000 claims description 7.Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.) Filing date Publication date Application filed by Zhejiang Minong Century Group Co ltd filed Critical Zhejiang Minong Century Group Co ltd Priority to CN202011153772.0A priority Critical patent/CN112229292A/en Publication of CN112229292A publication Critical patent/CN112229292A/en Status Pending legal-status Critical Current Links Original Assignee Zhejiang Minong Century Group Co ltd Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.) Inventor 聂小安 郭方元 王海文 Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.) Pending Application number CN202011153772.0A Other languages Chinese ( zh)











Paper protractor