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Artificial leg
US 2,568,051 A
Filed
: 10/10/1947
Issued
: 09/18/1951
Est. Priority Date
: 10/10/1947
Status: Expired due to Term
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Current Assignee
John G. Catranis
Original Assignee
John G. Catranis
Inventors
Catranis, John G.
Application Number
US02/779,011
Time in Patent Office
1,439 Days
Field of Search
US Class Current
623/26
CPC Class Codes
A61F 2/604
Joints for artificial legs ...
A61F 2/64
Knee joints
A61F 2/68
Operating or control means
A61F 2/74
fluid , i.e. hydraulic or p...
A61F 2/748
Valve systems
A61F 2002/6818
for braking
A61F 2002/6854
for locking or unlocking a ...
Y10T 137/7778
Axes of ports perpendicular
Y10T 137/7779
Axes of ports parallel
Y10T 137/86928
Sequentially progressive op...
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