IP Library › Granted Patent US 4,140,188
Granted Patent Utility
US 4,140,188 · App. 05/842,567

High density jet perforating casing gun

Inventor: Roy R. Vann
Patented Case View Patent ↗
Granted: Feb 20, 1979 Filed: Oct 17, 1977
Inventor
Roy R. Vann
Assignee (at issue)
Peadby Vann

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Quick Facts
Patent No.
US 4,140,188
App. No.
05/842,567
Filed
1977-10-17
Granted
1979-02-20
Kind
A