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Vertebral trephine biopsy instruments
US 2,919,692 A
Filed
: 02/23/1956
Issued
: 01/05/1960
Est. Priority Date
: 02/23/1956
Status: Expired due to Term
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Current Assignee
Wolfgang Ackermann
Original Assignee
Wolfgang Ackermann
Inventors
WOLFGANG ACKERMANN
Application Number
US03/567,284
Time in Patent Office
1,412 Days
Field of Search
US Class Current
600/567
CPC Class Codes
A61B 10/025
for taking bone, bone marro...
A61B 17/1637
Hollow drills or saws produ...
A61B 17/1671
for the spine
A61B 17/3421
Cannulas
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