2963940

Information

• Patent Grant
• 2963940

• References
• Source

• Patent Number

  2,963,940

• Date Filed

  Not available

• Date Issued

  Tuesday, December 13, 1960
  64 years ago

• CPC

  • G02B27/025 - and magnifying means
  • Y10S62/19 - Ionic thompson effect

• US Classifications

  • 040 - Card, picture, or sign exhibiting
  • 062 - Refrigeration
  • 242 - Winding, tensioning, or guiding
  • 312 - Supports: cabinet structure
  • 352 - Optics: motion pictures