FR725951A
(en )
1932-05-20
Hydraulic opening and closing device
FR648180A
(en )
1928-12-06
Pneumatic device for opening and closing an electrical circuit
FR35684E
(en )
1930-03-27
Pneumatic device for opening and closing an electrical circuit
FR592531A
(en )
1925-08-04
Automatic opening and closing device for boxes
FR652033A
(en )
1929-03-02
Closing and opening device for cases
FR568975A
(en )
1924-04-04
Automatic device for opening and closing an electrical circuit at set times
FR559108A
(en )
1923-09-10
Box and device for easy opening and closing
FR719178A
(en )
1932-02-02
Device for automatically opening and closing an electrical circuit
FR689448A
(en )
1930-09-05
Opening and closing device for refrigeration presses
FR644411A
(en )
1928-10-08
Mechanical device for automatic closing and opening, at set times, of electrical circuits
FR584516A
(en )
1925-02-09
Closing device of an electrical circuit
FR680519A
(en )
1930-05-01
Automatic opening and closing device for sewers
FR666773A
(en )
1929-10-05
Hermetic closing device for electric accumulators
FR650526A
(en )
1929-01-10
Device for closing boxes
FR637670A
(en )
1928-05-05
Static device for automatic and progressive closing of electrical circuits
FR718779A
(en )
1932-01-28
Electric switch closing device
FR667700A
(en )
1929-10-19
Device for the sudden and forced opening and closing of electrical circuits applicable to switches, switches, etc.
FR759231A
(en )
1934-01-31
Chronophone with automatic device for closing or opening an electrical circuit
FR645714A
(en )
1928-10-30
Docile and hermetic closing device for various containers
FR668323A
(en )
1929-10-30
Device for the sudden and forced opening and closing of electrical circuits applicable in particular to switches, switches, etc.
FR677721A
(en )
1930-03-13
Device for automatic and repeated closing of automatic tripping electric circuit breakers
FR643292A
(en )
1928-09-13
Safety closing device, in particular for enclosures and boxes
FR591973A
(en )
1925-07-22
Device for closing or opening an electrical circuit for a determined time
FR42956E
(en )
1934-01-16
Device for automatically opening and closing an electrical circuit
FR583693A
(en )
1925-01-19
Mechanical device for automatically controlling the closing or opening of an electrical circuit