1869160

Information

• Patent Grant
• 1869160

• References
• Source

• Patent Number

  1,869,160

• Date Filed

  Not available

• Date Issued

  Tuesday, July 26, 1932
  92 years ago

• CPC

  • H03H3/02 - for the manufacture of piezo-electric or electrostrictive resonators or networks
  • H03H3/04 - for obtaining desired frequency or temperature coefficient
  • Y10S125/901 - forming piezoelectric crystals
  • Y10T29/42 - Piezoelectric device making

• US Classifications

  • 029 - Metal working
  • 023 - Chemistry: physical processes
  • 125 - Stone working
  • 216 - Etching a substrate: processes