3919549

Information

• Patent Grant
• 3919549

• References
• Source

• Patent Number

  3,919,549

• Date Filed

  Not available

• Date Issued

  Tuesday, November 11, 1975
  49 years ago

• CPC

  • G01N23/22 - by measuring secondary emission
  • G01N2223/0568 - spectro-diffractometry
  • G01N2223/079 - incident electron beam and measuring excited X-rays
  • G01N2223/301 - portable apparatus

• US Classifications

  • 250 - Radiant energy