3643340

Information

• Patent Grant
• 3643340

• References
• Source

• Patent Number

  3,643,340

• Date Filed

  Not available

• Date Issued

  Tuesday, February 22, 1972
  52 years ago

• CPC

  • F26B21/007 - the objects being bobbin- or spool-like bodies

• US Classifications

  • 034 - Drying and gas or vapor contact with solids