3121262

Information

• Patent Grant
• 3121262

• References
• Source

• Patent Number

  3,121,262

• Date Filed

  Not available

• Date Issued

  Tuesday, February 18, 1964
  60 years ago

• CPC

  • E06B5/20 - for insulation against noise
  • E04B1/86 - slab-shaped
  • E06B3/7015 - characterised by the filling between two external panels
  • E04B2001/8452 - with peripheral frame members
  • E06B2003/7071 - made of a plurality of separate blocks or strips
  • E06B2003/7094 - with ventilated innerspace
  • Y10T428/239 - Complete cover or casing
  • Y10T428/24777 - Edge feature

• US Classifications

  • 181 - Acoustics
  • 052 - Static structures
  • 200 - Electricity: circuit makers and breakers
  • 428 - Stock material or miscellaneous articles