1457454

Information

• Patent Grant
• 1457454

• References
• Source

• Patent Number

  1,457,454

• Date Filed

  Not available

• Date Issued

  Tuesday, June 5, 1923
  102 years ago

• CPC

  • E04F17/023 - made of masonry, concrete or other stone-like material; Insulating measures and joints therefor

• US Classifications

  • 052 - Static structures
  • 454 - Ventilation