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Flexible visual display system
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Patent number 4,015,342
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Issue date Apr 5, 1977
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The Singer Company
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Francis L. Masselle
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G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
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3832046
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Patent number 3,832,046
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Issue date Aug 27, 1974
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G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
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3774160
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Patent number 3,774,160
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Issue date Nov 20, 1973
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G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
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3696981
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Patent number 3,696,981
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Issue date Oct 10, 1972
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G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
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3675993
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Patent number 3,675,993
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Issue date Jul 11, 1972
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G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
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3574262
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Patent number 3,574,262
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Issue date Apr 13, 1971
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G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
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3367046
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Patent number 3,367,046
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Issue date Feb 6, 1968
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G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
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3089256
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Patent number 3,089,256
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Issue date May 14, 1963
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G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
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2938279
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Patent number 2,938,279
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Issue date May 31, 1960
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G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
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2518419
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Patent number 2,518,419
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Issue date Aug 8, 1950
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G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
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2385095
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Patent number 2,385,095
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Issue date Sep 18, 1945
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G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
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2307840
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Patent number 2,307,840
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Issue date Jan 12, 1943
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G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
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1968836
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Patent number 1,968,836
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Issue date Aug 7, 1934
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G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
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1018645
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Patent number 1,018,645
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Issue date Feb 27, 1912
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G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS