Abstract
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References
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U.S. Patent No. 4,379,856 Bayer Aktiengesellschaft.
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U.S. Patent No. 4,190,697 Milsco Manufacturing Company.
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U.S. Patent No. 4,405,681 Milsco Manufacturing Company.
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Patent Pending ... Milsco Manufacturing Company.
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Multimodular trademark pending-Milsco Manufacturing Company.