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Vandal-resistant security view port
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Patent number 4,571,901
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Issue date Feb 25, 1986
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Acorn Engineering Company
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Earl L. Morris
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E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS
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Lavatory basin
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Patent number D252099
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Issue date Jun 12, 1979
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Acorn Engineering Co.
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Earl L. Morris
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D23 - Environmental heating and cooling
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Lavatory basin
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Patent number D252100
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Issue date Jun 12, 1979
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Acorn Engineering Co.
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Earl L. Morris
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D23 - Environmental heating and cooling
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Waste drain connection
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Patent number 4,059,289
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Issue date Nov 22, 1977
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Acorn Engineering Company
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Earl Lavern Morris
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E03 - WATER SUPPLY SEWERAGE
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