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Seismic alarm system
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Patent number 4,408,196
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Issue date Oct 4, 1983
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Albert J. Freeman
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G08 - SIGNALLING
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Driver alert device
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Patent number 3,938,123
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Issue date Feb 10, 1976
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Lawrence Peska Associates, Inc.
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Glenfield Warner
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B60 - VEHICLES IN GENERAL
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3749947
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Patent number 3,749,947
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Issue date Jul 31, 1973
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H04 - ELECTRIC COMMUNICATION TECHNIQUE
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3280272
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Patent number 3,280,272
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Issue date Oct 18, 1966
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G11 - INFORMATION STORAGE
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2565577
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Patent number 2,565,577
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Issue date Aug 28, 1951
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G01 - MEASURING TESTING
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2518149
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Patent number 2,518,149
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Issue date Aug 8, 1950
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G01 - MEASURING TESTING
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2511766
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Patent number 2,511,766
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Issue date Jun 13, 1950
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G11 - INFORMATION STORAGE
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2492865
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Patent number 2,492,865
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Issue date Dec 27, 1949
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A47 - FURNITURE DOMESTIC ARTICLES OR APPLIANCES COFFEE MILLS SPICE MILLS SUCT...
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2003765
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Patent number 2,003,765
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Issue date Jun 4, 1935
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A63 - SPORTS GAMES AMUSEMENTS
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1919188
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Patent number 1,919,188
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Issue date Jul 25, 1933
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A63 - SPORTS GAMES AMUSEMENTS
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1900353
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Patent number 1,900,353
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Issue date Mar 7, 1933
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A63 - SPORTS GAMES AMUSEMENTS
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1873095
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Patent number 1,873,095
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Issue date Aug 23, 1932
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H04 - ELECTRIC COMMUNICATION TECHNIQUE
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1872372
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Patent number 1,872,372
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Issue date Aug 16, 1932
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G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
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1824473
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Patent number 1,824,473
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Issue date Sep 22, 1931
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G08 - SIGNALLING
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1806871
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Patent number 1,806,871
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Issue date May 26, 1931
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G01 - MEASURING TESTING
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1726947
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Patent number 1,726,947
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Issue date Sep 3, 1929
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H04 - ELECTRIC COMMUNICATION TECHNIQUE
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1725038
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Patent number 1,725,038
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Issue date Aug 20, 1929
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G01 - MEASURING TESTING
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1698812
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Patent number 1,698,812
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B61 - RAILWAYS
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1689121
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Patent number 1,689,121
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Issue date Oct 23, 1928
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H03 - BASIC ELECTRONIC CIRCUITRY
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1628077
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Patent number 1,628,077
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Issue date May 10, 1927
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H04 - ELECTRIC COMMUNICATION TECHNIQUE
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1582105
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Patent number 1,582,105
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Issue date Apr 27, 1926
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G01 - MEASURING TESTING
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1444685
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Patent number 1,444,685
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G08 - SIGNALLING
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1402420
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Patent number 1,402,420
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F42 - AMMUNITION BLASTING
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1368736
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Patent number 1,368,736
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Issue date Feb 15, 1921
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G08 - SIGNALLING
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1293984
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Patent number 1,293,984
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G01 - MEASURING TESTING
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1279831
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Patent number 1,279,831
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A63 - SPORTS GAMES AMUSEMENTS