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DE853887C
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Self-locking zipper slider
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DE857942C
|
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Process for the production of zippers
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DE834320C
|
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Device for sewing machines with needle feed
|
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DE835678C
|
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Friction gear with two pairs of friction wheels one behind the other
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DE825932C
|
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Multiple friction gear with parallel friction wheel pairs
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DE719783C
|
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Process for the production of cartridge cases with ejector groove
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DE673812C
|
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Friction gear transmission with parallel-axis friction cones
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DE668775C
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Friction wheel change and reversing gear
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DE670329C
|
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Friction gear
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DE669756C
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Friction gear
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DE665004C
|
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Friction wheel change and reversing gear
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DE669352C
|
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Friction gear
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