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US3625040A
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Method and apparatus for forming articles from a tubular blank
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US3578777A
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Corrugated tubing
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US3577621A
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Stretch method for making a tubular product
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GB1267520A
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Method of making an energy-absorbing tubular product
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DE1921719A1
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Producing corrugated tubing in two - operations
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Method for forming a shock absorbing structural member
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GB1174883A
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Method of making a Collapsible Tubular Member
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GB1166229A
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Method of Making a Tubular Product.
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FR1542969A
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Machine tool with stepping mechanism
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Workpiece indexing and feed apparatus
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US3459079A
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Indexing machine
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Shock absorbing structural member
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Apparatus for securing ends of flat strip material
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CA861173A
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Indexing machine
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CA868709A
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Stretch method for making a tubular product
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CA864979A
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Shock absorbing structural member
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CA874211A
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Method of making a tubular product
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