1770321

Information

• Patent Grant
• 1770321

• References
• Source

• Patent Number

  1,770,321

• Date Filed

  Not available

• Date Issued

  Tuesday, July 8, 1930
  94 years ago

• CPC

  • B60N2/504 - attached to the base and the backrest
  • B60N2/3018 - about vertical axis
  • B60N2/3047 - the cushion being hinged at the back-rest
  • B60N2/505 - Adjustable suspension including height adjustment
  • B60N2/509 - Seat guided by slides or the like
  • B60N2/544 - Compression or tension springs

• US Classifications

  • 297 - Chairs and seats
  • 248 - Supports