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Sampling device
US 3,405,772 A
Filed
: 09/28/1966
Issued
: 10/15/1968
Est. Priority Date
: 09/28/1966
Status: Expired due to Term
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21 Citations
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Current Assignee
John D. Wisenbaker
,
Robert W. Stuart
Original Assignee
John D. Wisenbaker
,
Robert W. Stuart
Inventors
Wisenbaker, John D.
,
Stuart, Robert W.
Application Number
US04/582,688
Time in Patent Office
748 Days
Field of Search
US Class Current
175/77
CPC Class Codes
E21B 49/06
using side-wall drilling to...
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