2557017

Information

• Patent Grant
• 2557017

• References
• Source

• Patent Number

  2,557,017

• Date Filed

  Not available

• Date Issued

  Tuesday, June 12, 1951
  73 years ago

• CPC

  • B31F1/0077 - Shaping by methods analogous to moulding
  • B31F1/008 - Shaping of tube ends
  • B31F5/00 - Attaching together paper or cardboard sheets, strips or webs or other preformed paper articles Reinforcing edges of paper or cardboard
  • B65H75/50 - Methods of making reels, bobbins, cop tubes, or the like by working an unspecified material, or several materials
  • Y10S493/954 - Spool

• US Classifications

  • 493 - Manufacturing container or tube from paper
  • 072 - Metal deforming