2917970

Information

• Patent Grant
• 2917970

• References
• Source

• Patent Number

  2,917,970

• Date Filed

  Not available

• Date Issued

  Tuesday, December 22, 1959
  65 years ago

• CPC

  • G02C7/14 - Mirrors Prisms
  • G02C9/04 - by fitting over or clamping on
  • H02K27/02 - characterised by the armature winding

• US Classifications

  • 248 - Supports
  • 351 - Optics: eye examining, vision testing and correcting
  • 359 - Optical: systems and elements