3447251

Information

• Patent Grant
• 3447251

• References
• Source

• Patent Number

  3,447,251

• Date Filed

  Not available

• Date Issued

  Tuesday, June 3, 1969
  55 years ago

• CPC

  • B29D35/061 - by injection moulding
  • A43B13/04 - plastics, rubber or vulcanised fibre
  • A43B13/20 - Pneumatic soles filled with a compressible fluid
  • A43B13/28 - characterised by their attachment, also attachment of combined soles and heels
  • B29D35/065 - by compression moulding, vulcanising or the like
  • B29D35/082 - injecting first the outer sole part
  • B29D35/087 - forming first the outer sole part

• US Classifications

  • 036 - Boots, shoes, and leggings
  • 264 - Plastic and nonmetallic article shaping or treating: processes
  • 425 - Plastic article or earthenware shaping or treating: apparatus