3840973

Information

• Patent Grant
• 3840973

• References
• Source

• Patent Number

  3,840,973

• Date Filed

  Not available

• Date Issued

  Tuesday, October 15, 1974
  50 years ago

• CPC

  • G02B27/025 - and magnifying means
  • G03B23/125 - the pictures being attached to a chain or linked up to form a chain
  • Y10T29/4984 - Retaining clearance for motion between assembled parts
  • Y10T29/49863 - with prestressing of part

• US Classifications

  • 029 - Metal working
  • 352 - Optics: motion pictures