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1978065
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Patent number 1,978,065
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Issue date Oct 23, 1934
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H01 - BASIC ELECTRIC ELEMENTS
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1934548
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Patent number 1,934,548
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Issue date Nov 7, 1933
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F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
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1933083
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Patent number 1,933,083
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Issue date Oct 31, 1933
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H01 - BASIC ELECTRIC ELEMENTS
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1852163
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Patent number 1,852,163
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Issue date Apr 5, 1932
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F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
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1827103
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Patent number 1,827,103
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Issue date Oct 13, 1931
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H01 - BASIC ELECTRIC ELEMENTS
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1827102
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Patent number 1,827,102
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Issue date Oct 13, 1931
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H01 - BASIC ELECTRIC ELEMENTS
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1798854
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Patent number 1,798,854
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Issue date Mar 31, 1931
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G01 - MEASURING TESTING
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1796101
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Patent number 1,796,101
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Issue date Mar 10, 1931
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H01 - BASIC ELECTRIC ELEMENTS
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1791896
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Patent number 1,791,896
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Issue date Feb 10, 1931
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H01 - BASIC ELECTRIC ELEMENTS
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1791839
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Patent number 1,791,839
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Issue date Feb 10, 1931
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H01 - BASIC ELECTRIC ELEMENTS
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1783448
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Patent number 1,783,448
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H01 - BASIC ELECTRIC ELEMENTS
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1775949
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Patent number 1,775,949
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G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
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1746827
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Issue date Feb 11, 1930
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H01 - BASIC ELECTRIC ELEMENTS
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1728785
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Patent number 1,728,785
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Issue date Sep 17, 1929
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H01 - BASIC ELECTRIC ELEMENTS
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1722186
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Patent number 1,722,186
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G05 - CONTROLLING REGULATING
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1661346
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H01 - BASIC ELECTRIC ELEMENTS
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1661348
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Issue date Mar 6, 1928
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H01 - BASIC ELECTRIC ELEMENTS
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1661347
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Patent number 1,661,347
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Issue date Mar 6, 1928
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H01 - BASIC ELECTRIC ELEMENTS
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1661349
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Patent number 1,661,349
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H01 - BASIC ELECTRIC ELEMENTS
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1643792
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H01 - BASIC ELECTRIC ELEMENTS
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1558277
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H01 - BASIC ELECTRIC ELEMENTS
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1558331
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Patent number 1,558,331
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H01 - BASIC ELECTRIC ELEMENTS
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1494650
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H01 - BASIC ELECTRIC ELEMENTS
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1470079
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H01 - BASIC ELECTRIC ELEMENTS
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1458924
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G01 - MEASURING TESTING
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1399226
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H01 - BASIC ELECTRIC ELEMENTS
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1398635
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H01 - BASIC ELECTRIC ELEMENTS
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1349954
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G05 - CONTROLLING REGULATING
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1348842
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H01 - BASIC ELECTRIC ELEMENTS
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1332040
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Patent number 1,332,040
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H01 - BASIC ELECTRIC ELEMENTS