3545072

Information

• Patent Grant
• 3545072

• References
• Source

• Patent Number

  3,545,072

• Date Filed

  Not available

• Date Issued

  Tuesday, December 8, 1970
  54 years ago

• CPC

  • E06C7/085 - achieved by deforming the rung or the stile
  • B21D39/063 - for assembling ladders
  • Y10T29/49927 - Hollow body is axially joined cup or tube
  • Y10T29/49934 - by axially applying force
  • Y10T29/49938 - Radially expanding part in cavity, aperture, or hollow body

• US Classifications

  • 029 - Metal working