2973689

Information

• Patent Grant
• 2973689

• References
• Source

• Patent Number

  2,973,689

• Date Filed

  Not available

• Date Issued

  Tuesday, March 7, 1961
  63 years ago

• CPC

  • 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
  • G03B21/001 - Slide projectors

• US Classifications

  • 353 - Optics: image projectors