3747131

Information

• Patent Grant
• 3747131

• References
• Source

• Patent Number

  3,747,131

• Date Filed

  Not available

• Date Issued

  Tuesday, July 24, 1973
  51 years ago

• CPC

  • E04H4/103 - with inflatable chambers
  • E04H4/105 - supported by air pressure under the cover

• US Classifications

  • 004 - Baths, closets, sinks, and spittoons
  • 052 - Static structures