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FR1396783A
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Rotation drive tool for threaded fasteners
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GB994142A
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Bit end of tool for driving screw fasteners
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FR1325282A
|
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Screwdriver and its manufacturing process
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GB950544A
|
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Bit end of tool for driving screw fasteners
|
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US3133568A
|
|
Bit end of tool for driving screw fastener
|
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US3156152A
|
|
Self-tapping driving screw fastener
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US2318273A
|
|
Detachable bit tool
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US2263527A
|
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Fastening device and process
|
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US2263059A
|
|
Push rod and process
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US2176846A
|
|
Clinch-on nut
|
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US2235781A
|
|
Screw driver
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FR720927A
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Further training in screw manufacturing
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