3835542

Information

• Patent Grant
• 3835542

• References
• Source

• Patent Number

  3,835,542

• Date Filed

  Not available

• Date Issued

  Tuesday, September 17, 1974
  50 years ago

• CPC

  • B43L7/005 - combined with other drawing aids
  • B43L7/04 - with rollers
  • Y10S33/01 - Magnetic

• US Classifications

  • 033 - Geometrical instruments
  • D10 - Measuring, testing, or signalling instruments