Patent classifications
B
PERFORMING OPERATIONS; TRANSPORTING
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B25
HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
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B25J
MANIPULATORS; CHAMBERS PROVIDED WITH MANIPULATION DEVICES
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B25J17/0258
Two-dimensional joints
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B25J17/0275
Universal joints, e.g. Hooke, Cardan, ball joints
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