|
US1833316A
|
|
Electromagnetic coupling device
|
|
GB368926A
|
|
Improvements in acoustic diaphragms
|
|
US1926606A
|
|
Receptacle for disk talking machine records
|
|
US1838987A
|
|
High frequency variable resistance device
|
|
US1919920A
|
|
Sound record
|
|
US1976001A
|
|
Wireless receiver
|
|
US1964765A
|
|
Photographic camera and picture projecting and viewing apparatus
|
|
US1963485A
|
|
Moving picture apparatus
|
|
US1956708A
|
|
Stopping device for talking machines
|
|
US1956705A
|
|
Wireless receiver
|
|
US1813483A
|
|
Automatic brake for talking machines
|
|
US1907501A
|
|
Talking machine
|
|
US1907500A
|
|
Talking machine
|
|
US1938564A
|
|
Means for printing, impressing, or embossing upon sheet or strip material
|
|
GB350058A
|
|
Improvements in and relating to chromium plated talking machine needles
|
|
US1967599A
|
|
Talking machine
|
|
US1923559A
|
|
Talking machine
|
|
GB354691A
|
|
Improvements in or relating to selector systems
|
|
GB346060A
|
|
Improved means for indicating the elevation of aircraft
|
|
GB353403A
|
|
Sound wave systems for use, for example, with aircraft
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