2977658

Information

• Patent Grant
• 2977658

• References
• Source

• Patent Number

  2,977,658

• Date Filed

  Not available

• Date Issued

  Tuesday, April 4, 1961
  64 years ago

• CPC

  • B28B7/306 - pliable or extensible
  • B28B7/32 - inflatable
  • B29C33/505 - cores or mandrels

• US Classifications

  • 249 - Static molds
  • 174 - Electricity: conductors and insulators
  • 269 - Work holders