2977657

Information

• Patent Grant
• 2977657

• References
• Source

• Patent Number

  2,977,657

• Date Filed

  Not available

• Date Issued

  Tuesday, April 4, 1961
  63 years ago

• CPC

  • B28B7/0085 - with surfaces for moulding chamfers
  • B28B7/0061 - Moulds, cores or mandrels specially adapted for mechanically working moulding surfaces during moulding or demoulding
  • Y10S425/106 - Chamber

• US Classifications

  • 425 - Plastic article or earthenware shaping or treating: apparatus