2949830

Information

• Patent Grant
• 2949830

• References
• Source

• Patent Number

  2,949,830

• Date Filed

  Not available

• Date Issued

  Tuesday, August 23, 1960
  64 years ago

• CPC

  • G03B7/22 - in accordance with temperature or height

• US Classifications

  • 396 - Photography
  • 359 - Optical: systems and elements