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Clamps
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Patent number 4,407,050
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Issue date Oct 4, 1983
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Hermann F. Offterdinger
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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Corner construction
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Patent number 4,240,765
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Issue date Dec 23, 1980
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Hermann F. Offterdinger
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E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS
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Linear motion devices
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Patent number 4,041,786
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Issue date Aug 16, 1977
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Hermann Freidrich Offterdinger
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A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
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Runner wheel support
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Patent number 4,006,513
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Issue date Feb 8, 1977
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Hermann Friedrich Offterdinger
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E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES