1733660

Information

• Patent Grant
• 1733660

• References
• Source

• Patent Number

  1,733,660

• Date Filed

  Not available

• Date Issued

  Tuesday, October 29, 1929
  95 years ago

• CPC

  • B21F35/00 - Making springs from wire
  • B21F33/04 - Connecting ends of helical springs for mattresses
  • B68G2009/005 - Devices for turning the springs 90° inside the pockets

• US Classifications

  • 140 - Wireworking
  • 112 - Sewing