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Helical barbed tape recovery tool
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Patent number 5,072,980
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Issue date Dec 17, 1991
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MRM Security Systems, Inc.
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John W. Mainiero
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B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
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Apparatus for making barbed tape
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Patent number 4,920,775
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Issue date May 1, 1990
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MRM Security Systems, Inc.
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John W. Mainiero
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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Process for making barbed tape
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Patent number 4,833,904
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Issue date May 30, 1989
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MRM Security Systems, Inc.
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John W. Mainiero
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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Barbed tape
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Patent number 4,784,373
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Issue date Nov 15, 1988
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MRM Security Systems, Inc.
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John W. Mainiero
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...