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Sliding door assembly
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Patent number 4,656,781
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Issue date Apr 14, 1987
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Ardco, Inc.
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Francis M. Niekrasz
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F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
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Sliding door assembly
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Patent number 4,641,461
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Issue date Feb 10, 1987
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Ardco, Inc.
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Francis M. Niekrasz
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F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
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Door operating mechanism
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Patent number 4,430,770
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Issue date Feb 14, 1984
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Ardco, Inc.
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Frank M. Niekrasz
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F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
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