2528640

Information

• Patent Grant
• 2528640

• References
• Source

• Patent Number

  2,528,640

• Date Filed

  Not available

• Date Issued

  Tuesday, November 7, 1950
  74 years ago

• CPC

  • G01D13/10 - with adjustable scales with auxiliary scales
  • Y10S116/37 - Multiple movable scales
  • Y10S116/46 - Interchangeable scales

• US Classifications

  • 116 - Signals and indicators
  • 033 - Geometrical instruments
  • 324 - Electricity: measuring and testing
  • 353 - Optics: image projectors