FR725619A
(en )
1932-05-14
Improvements to electrical switches
DK44359C
(en )
1931-07-13
Device for Covers for Electrical Switches with Cable Connection.
FR686817A
(en )
1930-07-31
Improvements made to contact boxes or electrical outlets
DK48790C
(en )
1934-05-28
Device for electric switches at Jærnbaner.
DK45488C
(en )
1932-04-04
Device for electric central switching systems for railways.
DK46939C
(en )
1933-02-13
Device at electrical control systems at Jærnbaner.
ES118473A1
(en )
1930-07-01
Removable electrical connection device.
ES123292A1
(en )
1931-07-16
Lock device for electrical switches.
DK46901C
(en )
1933-02-06
Device with multi-pole electric rocker switches.
ES118865A1
(en )
1930-09-16
An automatic switching device for electric currents.
DK45820C
(en )
1932-06-20
Safety device for electric hoists.
DK44317C
(en )
1931-07-06
Device for sockets for electric lamps.
FR693556A
(en )
1930-11-21
Improvements to electrical switches
DK41430C
(en )
1930-01-06
Device for electrical setting works for railway signaling.
DK44552C
(en )
1931-08-31
Device by electric capacitors.
DK45183C
(en )
1932-02-01
Bearing device for electric waves.
CA296848A
(en )
1930-01-21
Electric switching device
DK45561C
(en )
1932-04-25
Device for electric housing.
ES119950A1
(en )
1930-12-01
An electric lighting device.
DK45663C
(en )
1932-05-17
Device for electrical switches with a signal lamp fitted thereon.
DK52185C
(en )
1936-09-21
Cover for electrical cables.
CH145394A
(en )
1931-02-28
Electric cooking equipment.
CA301009A
(en )
1930-06-10
Electric switch device
ES120242A1
(en )
1930-11-16
Electric switch.
FR692689A
(en )
1930-11-08
electric extractor