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Foldable tripod
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Patent number 4,640,482
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Issue date Feb 3, 1987
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Polaroid Corporation
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Howard G. Rogers
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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Substituted birefringent polyamide
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Patent number 4,461,886
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Issue date Jul 24, 1984
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Polaroid Corporation
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Howard G. Rogers
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C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
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Substituted birefringent polyhydrazide
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Patent number 4,461,888
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Issue date Jul 24, 1984
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Polaroid Corporation
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Howard G. Rogers
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C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
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Magenta dye developers
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Patent number 4,386,216
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Issue date May 31, 1983
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Polaroid Corporation
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Louis Locatell
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G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
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Magenta dye developers
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Patent number 4,264,701
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Issue date Apr 28, 1981
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Polaroid Corporation
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Louis Locatell
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G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
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