-
1953244
-
Patent number 1,953,244
-
Issue date Apr 3, 1934
-
G01 - MEASURING TESTING
-
1520086
-
Patent number 1,520,086
-
Issue date Dec 23, 1924
-
G01 - MEASURING TESTING
-
1467911
-
Patent number 1,467,911
-
Issue date Sep 11, 1923
-
G01 - MEASURING TESTING
-
1313323
-
Patent number 1,313,323
-
Issue date Aug 19, 1919
-
H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
-
1224321
-
Patent number 1,224,321
-
Issue date May 1, 1917
-
G01 - MEASURING TESTING
-
1055227
-
Patent number 1,055,227
-
Issue date Mar 4, 1913
-
H01 - BASIC ELECTRIC ELEMENTS
-
960823
-
Patent number 960,823
-
Issue date Jun 7, 1910
-
G01 - MEASURING TESTING
-
943015
-
Patent number 943,015
-
Issue date Dec 14, 1909
-
G01 - MEASURING TESTING
-
899068
-
Patent number 899,068
-
Issue date Sep 22, 1908
-
G01 - MEASURING TESTING
-
878456
-
Patent number 878,456
-
Issue date Feb 4, 1908
-
G01 - MEASURING TESTING
-
852895
-
Patent number 852,895
-
Issue date May 7, 1907
-
G01 - MEASURING TESTING
-
675755
-
Patent number 675,755
-
Issue date Jun 4, 1901
-
H01 - BASIC ELECTRIC ELEMENTS
-
419924
-
Patent number 419,924
-
Issue date Jan 21, 1890
-
H01 - BASIC ELECTRIC ELEMENTS
-
343392
-
Patent number 343,392
-
Issue date Jun 8, 1886
-
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
-
334890
-
Patent number 334,890
-
Issue date Jan 26, 1886
-
H01 - BASIC ELECTRIC ELEMENTS
-
331119
-
Patent number 331,119
-
Issue date Nov 24, 1885
-
G01 - MEASURING TESTING
-
268908
-
Patent number 268,908
-
Issue date Dec 12, 1882
-
G01 - MEASURING TESTING