GB657354A
(OSRAM )
1900-01-01
GB869234A
(en )
1961-05-31
Transducer and vibratory diaphragm
GB619640A
(OSRAM )
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.
GB190406655A
(en )
1905-01-19
Improvements in Phonographs and the like.
TWD237184S
(zh )
2025-03-21
淨水器
GB190907271A
(en )
1910-03-24
Improvements in and relating to Reducing Valves.
TWD227956S
(zh )
2023-10-11
聲音播放器
TWD239450S
(zh )
2025-07-21
空氣清淨機
TWD240722S
(zh )
2025-10-01
空氣清淨機
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
JPS57188196A
(en )
1982-11-19
Speaker system
GB393313A
(en )
1933-06-02
Improvements in or connected with diaphragms or the like for sound reproducers
GB223658A
(en )
1924-10-27
Improvements in or relating to microphones
GB248497A
(en )
1926-03-11
Improvements in and relating to diaphragms for sound boxes
GB734711A
(en )
1955-08-03
Improvements in or relating to broad band high frequency thermionic valve circuits
CARY
1918
EDWIN OAKES JORDAN, Professor of Bacteriology and Chairman of the Depart-ment of Hygiene and Bacteriology. Food Poisoning. 12mo, viii+ 112. Chicago: The University of Chi
GB190814249A
(en )
1909-07-05
Improvements in and relating to the Preparation of Coagulated Milk.