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Thin film beam spring vent valve
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Patent number 5,261,565
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Issue date Nov 16, 1993
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The Procter & Gamble Company
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James L. Drobish
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B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Dispensing package and follower deivce
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Patent number 4,640,442
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Issue date Feb 3, 1987
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The Procter & Gamble Company
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James L. Drobish
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B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
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Pump-type dispenser
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Patent number 4,533,069
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Issue date Aug 6, 1985
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The Procter & Gamble Company
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James L. Drobish
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B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL