3825412

Information

• Patent Grant
• 3825412

• References
• Source

• Patent Number

  3,825,412

• Date Filed

  Not available

• Date Issued

  Tuesday, July 23, 1974
  50 years ago

• CPC

  • F16L59/11 - Rigid covers for elbows
  • Y10T29/49391 - Tube making or reforming
  • Y10T29/49794 - Dividing on common outline
  • Y10T428/12188 - having marginal feature for indexing or weakened portion for severing
  • Y10T428/12229 - Intermediate article [e.g., blank, etc.]
  • Y10T428/12417 - Intersecting corrugating or dimples not in a single line [e.g., waffle form, etc.]
  • Y10T428/24628 - Nonplanar uniform thickness material
  • Y10T428/24686 - Pleats or otherwise parallel adjacent folds
  • Y10T428/24694 - Parallel corrugations

• US Classifications

  • 428 - Stock material or miscellaneous articles
  • 029 - Metal working