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Process for stiffening hats
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Mantrose Haueser Company
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James W. Martin
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B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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3898699
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A42 - HEADWEAR
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3673611
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A41 - WEARING APPAREL
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3542616
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B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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3366291
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A42 - HEADWEAR
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3305874
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Patent number 3,305,874
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B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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3156926
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A42 - HEADWEAR
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2971682
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A42 - HEADWEAR
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2936507
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A42 - HEADWEAR
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2936512
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A42 - HEADWEAR
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2930101
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A42 - HEADWEAR
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2924852
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B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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2892242
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A42 - HEADWEAR
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2844823
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A42 - HEADWEAR
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2840864
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A42 - HEADWEAR
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2817467
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A42 - HEADWEAR
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2777170
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D04 - BRAIDING LACE-MAKING KNITTING TRIMMINGS NON-WOVEN FABRICS
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2713443
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B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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C07 - ORGANIC CHEMISTRY
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2646598
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A42 - HEADWEAR
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2643034
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A42 - HEADWEAR
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2632937
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2615208
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A42 - HEADWEAR
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2594558
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A42 - HEADWEAR
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2566286
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D04 - BRAIDING LACE-MAKING KNITTING TRIMMINGS NON-WOVEN FABRICS
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2560508
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A42 - HEADWEAR
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2545208
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Patent number 2,545,208
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B26 - HAND CUTTING TOOLS CUTTING SEVERING
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2541151
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Patent number 2,541,151
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Issue date Feb 13, 1951
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A42 - HEADWEAR