Title:
Well tools and sealing means therefor
United States Patent 2719768


Inventors:
Webber, Jack C.
Application Number:
US32075052A
Publication Date:
10/04/1955
Filing Date:
11/15/1952
Assignee:
Webber, Jack C.
Primary Class:
Other Classes:
92/249, 166/202, 277/338, 277/648
International Classes:
E21B37/10
View Patent Images:
US Patent References:
2633808Well swab1953-04-07
2417349Pump seal assembly1947-03-11
2283460Piston1942-05-19
2018205Plunger1935-10-22
1634891Packing device1927-07-05