3805970

Information

• Patent Grant
• 3805970

• References
• Source

• Patent Number

  3,805,970

• Date Filed

  Not available

• Date Issued

  Tuesday, April 23, 1974
  50 years ago

• CPC

  • G02B27/025 - and magnifying means
  • B65G60/00 - Simultaneously or alternatively stacking and de-stacking of articles
  • G03B23/046 - Picture changing devices
  • Y10S414/111 - Audio or video cassettes

• US Classifications

  • 414 - Material or article handling
  • 198 - Conveyors: power-driven
  • 353 - Optics: image projectors
  • 360 - Dynamic magnetic information storage or retrieval