2991509

Information

• Patent Grant
• 2991509

• References
• Source

• Patent Number

  2,991,509

• Date Filed

  Not available

• Date Issued

  Tuesday, July 11, 1961
  63 years ago

• CPC

  • B61D17/22 - flexible
  • B29C53/28 - transverse to direction of feed
  • B29K2021/00 - Use of unspecified rubbers as moulding material
  • B29L2016/00 - Articles with corrugations or pleats
  • Y10S264/52 - Processes of making corrugated tubes for gas mask
  • Y10T156/1015 - Folding
  • Y10T156/1016 - Transverse corrugating

• US Classifications

  • 264 - Plastic and nonmetallic article shaping or treating: processes
  • 105 - Railway rolling stock
  • 156 - Adhesive bonding and miscellaneous chemical manufacture