Tag Archives: Radiation-free

Radiation-free earphone and making method thereof

Application Number: 00124974Application Date: 2000.09.28Publication Number: 1346229Publication Date: 2002.04.24Priority Information: International: H04R1/10Applicant(s) Name: Shanghai Shenmu Information Technology Co., Ltd.Address: Inventor(s) Name: Gu Jun;Lu JianhuaPatent Agency Code: 11021Patent Agent: jiang lilouAbstract The present invention relates to two methods for making earphone capable of resisting radio electromagnetic radiation pollution, one of them includes the sonic wave tubeā€¦ Read More »

Radiation-free phone receiver

Application Number: 00109870Application Date: 2000.07.10Publication Number: 1275017Publication Date: 2000.11.29Priority Information: International: H04M1/02Applicant(s) Name: Chi DelongAddress: Inventor(s) Name: Chi DelongPatent Agency Code: 00000Patent Agent: Abstract The radiation-free phone receiver of the present invention avoids the detriment of electromagnetic radiation during using phone receiver of mobile and fixed communication equipment based on the operation principle of stethoscope.