Title:
Casing repairing device
United States Patent 2593725
Inventors:
Brown, Cicero C.
Publication Date:
04/22/1952
Assignee:
Brown, Cicero C.
Other Classes:
166/243, 166/380
International Classes:
E21B23/00; E21B29/10; E21B33/134; E21B29/00; E21B33/13