2135800

Information

• Patent Grant
• 2135800

• References
• Source

• Patent Number

  2,135,800

• Date Filed

  Not available

• Date Issued

  Tuesday, November 8, 1938
  86 years ago

• CPC

  • G02C5/00 - Construction of non-optical parts
  • G02C5/16 - resilient or with resilient parts
  • G02C2200/10 - Frame or frame portions made from wire
  • G02C2200/28 - Coil spring twisted upon actuation

• US Classifications

  • 351 - Optics: eye examining, vision testing and correcting
  • 057 - Textiles: spinning, twisting, and twining