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Apparatus for treatment of the spinal column
US 2,677,369 A
Filed
: 03/26/1952
Issued
: 05/04/1954
Est. Priority Date
: 03/26/1952
Status: Expired due to Term
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Current Assignee
Fred L. Knowles
Original Assignee
Fred L. Knowles
Inventors
Knowles, Fred L.
Application Number
US03/278,596
Time in Patent Office
769 Days
Field of Search
US Class Current
606/249
CPC Class Codes
A61B 17/7062
Devices acting on, attached...
A61F 2/4405
for apophyseal or facet joi...
A61F 2/442
Intervertebral or spinal di...
A61F 2002/30118
concentric circles
A61F 2002/3082
Grooves
A61F 2002/30845
with cutting edges
A61F 2002/30879
Ribs
A61F 2230/0006
circular
A61F 2310/00017
Iron- or Fe-based alloys, e...
A61F 2310/00029
Cobalt-based alloys, e.g. C...
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