FR358905A
(en )
1906-03-12
Electrical measuring instrument
CH39745A
(en )
1908-04-16
Device for the calibration of alternating current measuring devices
CH35342A
(en )
1906-08-15
Electric measuring instrument
FR377987A
(en )
1907-09-20
Electric measuring instrument
FR354982A
(en )
1905-10-19
Electrical measuring device
CH34629A
(en )
1906-05-15
Magnet for electrical measuring devices
FR370519A
(en )
1907-02-11
Electrical measuring device
FR350698A
(en )
1905-06-22
Portable electrical measuring instrument
CH32310A
(en )
1905-07-15
Portable electrical measuring instrument
CH40207A
(en )
1908-06-01
Electric measuring instrument
FR372909A
(en )
1907-04-23
Electric meter for calibration
FR366431A
(en )
1906-10-04
Improvements in electrical measuring instruments
CH34137A
(en )
1906-03-15
Measuring device
FR354629A
(en )
1905-10-09
Measuring device
FR330029A
(en )
1903-08-11
Electrical measuring instrument
CH44385A
(en )
1909-08-02
Device for suspending electrical measuring devices
FR395036A
(en )
1909-02-08
Weighing instrument
CA94500A
(en )
1905-08-01
Electrical measuring instrument
CH25775A
(en )
1903-10-31
Measuring device
FI2054A
(en )
1903-08-25
Measuring device
CH37916A
(en )
1907-08-15
Measuring device on tissues
FR353429A
(en )
1905-09-11
Apparatus for testing electrical resistances
CH29699A
(en )
1904-09-15
Device for attaching the tails to folders
CH32812A
(en )
1905-09-15
Installation of electrical measuring devices to increase the sensitivity and accuracy of the same
FR357112A
(en )
1905-12-19
Magnet for electrical measuring devices