JPH01133845U - - Google Patents

Info

Publication number

JPH01133845U

JPH01133845U JP3000188U JP3000188U JPH01133845U JP H01133845 U JPH01133845 U JP H01133845U JP 3000188 U JP3000188 U JP 3000188U JP 3000188 U JP3000188 U JP 3000188U JP H01133845 U JPH01133845 U JP H01133845U

Authority

JP

Japan

Prior art keywords

piezoelectric vibrator

chamber plate

air chamber

back air

telephone handset

Prior art date

1988-03-07

Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)

Pending

Links

• Espacenet
• Global Dossier
• Discuss

• 239000000919 ceramic Substances 0.000 claims description 2
• 239000002184 metal Substances 0.000 claims description 2
• 238000009423 ventilation Methods 0.000 claims 1
• 239000000463 material Substances 0.000 description 2
• 238000010586 diagram Methods 0.000 description 1
• WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 1