Geometrical instruments
Patent
1980-05-20
1984-10-16
Desmond, Eugene F.
Geometrical instruments
339 23, 339 98, H01R 466, H01R 13506
Patent
active
044771312
ABSTRACT:
An electric distribution board serves for the distribution of two phases, or of two phases and an earth and has a back member which receives, according to choice, two mounts which are each appropriate to the respective method of current distribution, these mounts comprising selector means which only permit couplings with compatible current connector plugs.
REFERENCES:
patent: 3786171 (1974-01-01), Shira
patent: 4278834 (1981-07-01), Boundy
Desmond Eugene F.
Drucker William A.
La Telemecanique Electrique
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