2492909

Information

• Patent Grant
• 2492909

• References
• Source

• Patent Number

  2,492,909

• Date Filed

  Not available

• Date Issued

  Tuesday, December 27, 1949
  75 years ago

• CPC

  • B21D31/04 - Expanding other than provided for in groups B21D1/00 - B21D28/00
  • B21D53/025 - Louvered fins
  • Y10S160/07 - Fabric
  • Y10T428/12264 - having outward flange, gripping means or interlocking feature
  • Y10T428/12271 - having discrete fastener, marginal fastening, taper, or end structure
  • Y10T428/24281 - Struck out portion type
  • Y10T428/24314 - Slit or elongated
  • Y10T428/31678 - Of metal

• US Classifications

  • 428 - Stock material or miscellaneous articles
  • 015 - Brushing, scrubbing, and general cleaning
  • 052 - Static structures
  • 072 - Metal deforming
  • 160 - Flexible or portable closure, partition, or panel
  • 296 - Land vehicles: bodies and tops
  • 454 - Ventilation
  • D25 - Building units and construction elements