GR1648B
(en )
1927-10-22
IMPROVEMENTS IN WIRELESS TELEPHONE AND TELEPHONE.
GR988B
(en )
1925-08-05
IMPROVEMENTS IN WIRELESS TELEPHONE AND AIR PHONE.
ES102694A1
(en )
1927-07-01
Perfecting in belts.
ES105898A1
(en )
1928-03-01
Perfeccionamientos in winches, winches and similar devices.
ES104646A1
(en )
1927-12-01
Perfeccionamientos in mowers and mechanical agavilladoras.
GR1103B
(en )
1926-01-25
PORTABLE MECHANICAL TELEPHONE AND TELEPHONE RESPONSE MACHINE.
ES99104A1
(en )
1926-11-01
Improvements in radiotelegraph and telephone communications.
GR1381B
(en )
1926-12-31
IMPROVEMENTS IN AND RELATED TO TELEPHONE SYSTEMS.
ES105592A1
(en )
1928-02-16
New improvements in strap and wire rolls.
ES101936A1
(en )
1927-04-16
Improvements in fans.
ES103525A1
(en )
1927-08-16
An improvement in purging devices and similar devices.
ES110353A1
(en )
1929-01-01
Improvements in scales and scales.
ES99119A1
(en )
1926-11-01
Improvement in belts.
GR1471B
(en )
1927-03-28
IMPROVEMENTS IN IRON WHEELCHAIRS.
ES90140A1
(en )
1924-10-16
Improvements in radiotelegraphy and radiotelephony.
ES105144A1
(en )
1928-07-01
An improvement in postcards, photographs and the like.
ES112680A1
(en )
1929-07-01
An improvement in leggings and leggings.
ES93650A1
(en )
1925-07-16
Improvements in amplifying devices.
ES102316A1
(en )
1927-05-16
Improvements in scales.
GR2091B
(en )
1928-12-27
MODIFICATION IN LIFEBUILDING DEVICE.
ES103151A1
(en )
1927-07-16
Improvements in microphones.
ES107094A1
(en )
1928-06-16
Perforating and self-reproducing device.
ES103900A1
(en )
1927-09-16
Perfection in umbrellas, umbrellas and similar.
ES101846A1
(en )
1927-04-16
Improvements introduced in umbrellas and similar devices.
ES104445A1
(en )
1927-12-01
Improvements in pumps.