1764678

Information

• Patent Grant
• 1764678

• References
• Source

• Patent Number

  1,764,678

• Date Filed

  Not available

• Date Issued

  Tuesday, June 17, 1930
  95 years ago

• CPC

  • E04F21/1805 - Ceiling panel lifting devices
  • E04F21/1833 - spring-force actuated

• US Classifications

  • 269 - Work holders
  • 248 - Supports