2740327

Information

• Patent Grant
• 2740327

• References
• Source

• Patent Number

  2,740,327

• Date Filed

  Not available

• Date Issued

  Tuesday, April 3, 1956
  68 years ago

• CPC

  • G02C1/08 - the rims being tranversely split and provided with securing means
  • Y10S411/972 - Distorted

• US Classifications

  • 351 - Optics: eye examining, vision testing and correcting
  • 411 - Expanded, threaded, driven, headed, tool-deformed, or locked-threaded fastener