1991712

Information

• Patent Grant
• 1991712

• References
• Source

• Patent Number

  1,991,712

• Date Filed

  Not available

• Date Issued

  Tuesday, February 19, 1935
  89 years ago

• CPC

  • B24B5/32 - the work-supporting means being indexable

• US Classifications

  • 451 - Abrading