GB657354A
(enExample )
1900-01-01
GB869234A
(en )
1961-05-31
Transducer and vibratory diaphragm
GB619640A
(enExample )
1900-01-01
GB705560A
(en )
1954-03-17
Improvements in or relating to contact microphones
GB191516204A
(en )
1916-08-24
Improvements in Reducing Valves particularly adapted for use in connection with Breathing Apparatus.
GB396308A
(en )
1933-08-03
Improvements relating to gas pressure regulators
GB190406655A
(en )
1905-01-19
Improvements in Phonographs and the like.
TWD237184S
(zh )
2025-03-21
淨水器
GB191217150A
(en )
1912-09-26
Improvements in or relating to Teats for Feeding Bottles or the like.
GB190907271A
(en )
1910-03-24
Improvements in and relating to Reducing Valves.
TWD227956S
(zh )
2023-10-11
聲音播放器
GB738283A
(en )
1955-10-12
Improvements in or relating to valve arrangements for use in resuscitation and in anaesthesia
GB190420789A
(en )
1905-09-07
Improvements in Automatic Musical Instruments.
GB306709A
(en )
1929-02-28
Improvements in, or relating to, pneumatically operated player mechanism for musicalinstruments
Cheuk
1958
The individual amino acid requirements of certain soil microorganisms
GB370720A
(en )
1932-04-14
Improvements in gas pressure regulators
GB485557A
(en )
1938-05-19
Improvements in or relating to the recording or transmission of sound by electrical means
GB348198A
(en )
1931-05-14
Improvements in or relating to sound reproducing devices
GB345860A
(en )
1931-04-02
A sound producing instrument
GB191121424A
(en )
1912-08-08
An Improved Milking Machine.
GB393313A
(en )
1933-06-02
Improvements in or connected with diaphragms or the like for sound reproducers
GB191009769A
(en )
1911-04-21
An Improved Intercooler for use in connection with Compressors of Air and other Gases.
GB248497A
(en )
1926-03-11
Improvements in and relating to diaphragms for sound boxes
GB726220A
(en )
1955-03-16
Improvements in or relating to sound producing devices
GB734711A
(en )
1955-08-03
Improvements in or relating to broad band high frequency thermionic valve circuits