3348449

Information

• Patent Grant
• 3348449

• References
• Source

• Patent Number

  3,348,449

• Date Filed

  Not available

• Date Issued

  Tuesday, October 24, 1967
  57 years ago

• CPC

  • B02C2/10 - concentrically moved Bell crushers
  • G02B1/00 - Optical elements characterised by the material of which they are made
  • G03B23/14 - Carriers operable to move pictures into, and out of, the projection or viewing position and carrying one or two pictures only in a removable manner also other devices not provided with a stock

• US Classifications

  • 353 - Optics: image projectors
  • 355 - Photocopying