3643773

Information

• Patent Grant
• 3643773

• References
• Source

• Patent Number

  3,643,773

• Date Filed

  Not available

• Date Issued

  Tuesday, February 22, 1972
  53 years ago

• CPC

  • B41J3/42 - Two or more complete typewriters coupled for simultaneous operation

• US Classifications

  • 400 - Typewriting machines
  • D18 - Printing and office machinery