2909959

Information

• Patent Grant
• 2909959

• References
• Source

• Patent Number

  2,909,959

• Date Filed

  Not available

• Date Issued

  Tuesday, October 27, 1959
  65 years ago

• CPC

  • G02B23/00 - Telescopes
  • B63C11/16 - with air supply by suction from diver
  • B63C2011/126 - Diving masks comprising periscopes, mirrors, or the like; Periscopes, mirrors, or the like specially adapted for use with diving masks

• US Classifications

  • 002 - Apparel
  • 128 - Surgery
  • 351 - Optics: eye examining, vision testing and correcting
  • 359 - Optical: systems and elements