Robert F. Crane

5 Patents

• US124108792025

  Latch Assembly for Use with an Inversion Drum

  The Charles Machine Works, Inc.

  0 cites
• US122817262025

  Pipe Extraction Assisted by Pre-stressed Strand

  The Charles Machine Works, Inc.

  0 cites
• US120922572024

  Lead Pipe Spudding Prior to Extraction or Remediation

  The Charles Machine Works, Inc.

  0 cites
• US119135702024

  System for Applying Torsional Force to a Buried Pipe to Facilitate Extraction

  The Charles Machine Works, Inc.

  0 cites
• US116193362023

  Pipe Slitting Machine with Rope Storage Reel

  The Charles Machine Works, Inc.

  0 cites