1921811

Information

• Patent Grant
• 1921811

• References
• Source

• Patent Number

  1,921,811

• Date Filed

  Not available

• Date Issued

  Tuesday, August 8, 1933
  91 years ago

• CPC

  • B67B7/08 - using air or gas pressure

• US Classifications

  • 081 - Tools
  • D08 - Tools and hardware