2937842

Information

• Patent Grant
• 2937842

• References
• Source

• Patent Number

  2,937,842

• Date Filed

  Not available

• Date Issued

  Tuesday, May 24, 1960
  64 years ago

• CPC

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

• US Classifications

  • 248 - Supports
  • 182 - Fire escape, ladder, or scaffold