1977546

Information

• Patent Grant
• 1977546

• References
• Source

• Patent Number

  1,977,546

• Date Filed

  Not available

• Date Issued

  Tuesday, October 16, 1934
  90 years ago

• CPC

  • B41J19/36 - Driving mechanism

• US Classifications

  • 267 - Spring devices
  • 160 - Flexible or portable closure, partition, or panel
  • 242 - Winding, tensioning, or guiding
  • 400 - Typewriting machines