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Interactive audio visual work
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Patent number 5,453,013
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Issue date Sep 26, 1995
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Western Publishing Co., Inc.
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Zeb Billings
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G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
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Interactive audiovisual apparatus
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Patent number 5,404,444
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Issue date Apr 4, 1995
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Sight & Sound Incorporated
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Zeb Billings
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G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
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Electronic book
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Patent number D349923
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Issue date Aug 23, 1994
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Western Publishing Company, Inc.
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Zeb Billings
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D19 - Office supplies
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Interactive audio visual work
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Patent number 5,209,665
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Issue date May 11, 1993
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Sight & Sound Incorporated
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Zeb Billings
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G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
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Interactive audio-visual puzzle
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Patent number 5,087,043
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Issue date Feb 11, 1992
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Sight and Sound Inc.
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Zeb Billings
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G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS