2612673

Information

• Patent Grant
• 2612673

• References
• Source

• Patent Number

  2,612,673

• Date Filed

  Not available

• Date Issued

  Tuesday, October 7, 1952
  72 years ago

• CPC

  • E04G11/04 - for structures of spherical, spheroid or similar shape, or for cupola structures of circular or polygonal horizontal or vertical section Inflatable forms
  • B28B21/205 - having a rigid frame inside the inflatable part of the core
  • F16L1/038 - the pipes being made in situ

• US Classifications

  • 425 - Plastic article or earthenware shaping or treating: apparatus
  • 249 - Static molds