2453742

Information

• Patent Grant
• 2453742

• References
• Source

• Patent Number

  2,453,742

• Date Filed

  Not available

• Date Issued

  Tuesday, November 16, 1948
  76 years ago

• CPC

  • F16C11/0647 - Special features relating to adjustment for wear or play; Wear indicators
  • A61H3/0288 - Ferrules or tips therefor
  • A61H2003/0272 - on a single crutch allowing it to remain upright when not in use
  • A61H2003/0294 - comprising a ball-and-socket joint
  • Y10T403/32713 - Elastomerically biased or backed components
  • Y10T403/32991 - Axially spring-biased coaxial members
  • Y10T403/45 - Flexibly connected rigid members

• US Classifications

  • 135 - Tent, canopy, umbrella, or cane
  • 403 - Joints and connections