2977925

Information

• Patent Grant
• 2977925

• References
• Source

• Patent Number

  2,977,925

• Date Filed

  Not available

• Date Issued

  Tuesday, April 4, 1961
  63 years ago

• CPC

  • G01B15/02 - for measuring thickness
  • G01N23/00 - Investigating or analysing materials by the use of wave or particle radiation not covered by G01N21/00 or G01N22/00
  • G01N2223/61 - thin films, coatings
  • G01N2223/626 - radioactive material
  • G01N2223/6265 - sample with radioactive tracer, tag, label

• US Classifications

  • 118 - Coating apparatus
  • 250 - Radiant energy