Mining process and system by remote control

• US 2,699,328 A
• Filed: 04/02/1949
• Issued: 01/11/1955
• Est. Priority Date: 04/02/1949
• Status: Expired due to Term

• Current Assignee: John W. Heimaster, Paul L. Alspaugh, Roy L. Mcneill
• Original Assignee: John W. Heimaster, Paul L. Alspaugh, Roy L. Mcneill
• Inventors: Alspaugh, Paul L., Heimaster, John W., Mcneill, Roy L.
• Application Number:
  US03/085,222
• Time in Patent Office: 2,110 Days
• US Class Current: 299/1.4
• CPC Class Codes: E21C 31/00 Driving means incorporated in machines for slitting or completely freeing the mineral from the seam

Claims