3801994

Information

• Patent Grant
• 3801994

• References
• Source

• Patent Number

  3,801,994

• Date Filed

  Not available

• Date Issued

  Tuesday, April 9, 1974
  50 years ago

• CPC

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

• US Classifications

  • 004 - Baths, closets, sinks, and spittoons