GR2365B
(en )
1929-07-08
IMPROVEMENTS IN AND REGARDING SWITCH SETTINGS BY AUTOMATIC OR SEMI-AUTOMATIC TELEPHONE SYSTEMS.
GR2353B
(en )
1929-07-04
IMPROVEMENTS IN SWITCH ARRANGEMENTS BY AUTOMATIC OR SEMI-AUTOMATIC TELEPHONE SYSTEMS.
GR2306B
(en )
1929-05-30
SWITCH SETTINGS FOR AUTOMATIC OR SEMI-AUTOMATIC TELEPHONE SYSTEMS.
GR2346B
(en )
1929-06-24
SWITCH SETTINGS, AUTOMATIC OR SEMI-AUTOMATIC TELEPHONE CHANGE SYSTEMS.
GR2348B
(en )
1929-06-25
IMPROVEMENTS IN AUTOMATIC AND SEMI-AUTOMATIC TELEPHONE SYSTEMS.
ES112398A1
(en )
1929-10-01
Improvements in automatic or semiautomatic telephone systems.
GR2347B
(en )
1929-06-24
IMPROVEMENTS IN AUTOMATIC OR SEMI-AUTOMATIC TELEPHONE SYSTEMS.
CH153049A
(en )
1932-02-29
Circuit arrangement in telephone systems.
DK49737C
(en )
1935-01-07
Electrical Resistance Element.
ES114933A1
(en )
1930-10-16
Improvements in automatic or semi-automatic scales.
ES112056A1
(en )
1929-08-01
Automatic forecast "SopeƱa".
ES121777A1
(en )
1931-05-16
Improvements in the suspenders.
ES117623A1
(en )
1930-05-01
Improvements in automatic or semiautomatic telephone systems.
ES115376A1
(en )
1929-12-16
Automatic switch
GR2446B
(en )
1929-09-07
MONOPOLIC AUTOMATIC SWITCH.
ES115643A2
(en )
1930-02-01
IMPROVEMENTS IN THE AUTOMATIC OR SEMIAUTOMATIC BALANCES
ES112655A3
(en )
1929-10-16
An automatic or semi-automatic balance.
ES118885A1
(en )
1930-08-01
Improvements in the systems of automatic or semiautomatic telephone exchanges.
ES115509A1
(en )
1929-12-01
Improvements in automatic and semiautomatic telephone systems.
ES117219A1
(en )
1930-04-01
Improvement in automatic or semiautomatic telephone systems.
GR1354B
(en )
1926-12-06
IMPROVEMENTS IN OR RELATED TO AUTOMATIC OR SEMI-AUTOMATIC TELEPHONE SYSTEMS.
ES99395A1
(en )
1926-11-16
Improvements in automatic or semi-automatic telephone systems.
ES111529A1
(en )
1929-05-01
Improvements in automatic pistols.
GR2296B
(en )
1929-05-18
IMPROVEMENTS CONCERNING DIALECTRIC LIGHTING.
ES125105A3
(en )
1932-02-01
Improvements in postcards.