All Patents of Type: electric meters |
Patents 1 -
9
of 9
|
Number | Date | Patentee | Title | Type |
392,386 | Nov. 06, 1888 | E. Weston | Electrical Measuring Apparatus | electric meters |
392,387 | Nov. 06, 1888 | E. Weston | Electrical Measuring Apparatus | electric meters |
426,992 | Apr. 29, 1890 | M.M. Garver | Electrical Measuring Instrument | electric meters |
427,022 | Apr. 29, 1890 | E. Weston | Electrical Measuring Instrument | electric meters |
D19,895 | Jun. 10, 1890 | E. Weston | Case for Electrical Instruments | electric meters |
D19,896 | Jun. 10, 1890 | E. Weston | Magnet | electric meters |
540,153 | May 28, 1895 | M. von Dolivo-Dobrowolsky | Apparatus for determining differences between phases of two electric alternating currents | electric meters |
681,002 | Aug. 20, 1901 | A. Peloux | Motor Meter for Alternating Currents | electric meters |
715,220 | Dec. 02, 1902 | M.E. Thompson | Means of Measuring Alternating Electric Currents | electric meters |