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US1281877A
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Automobile-horn.
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CA154094A
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Automobile horn
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GB191316213A
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Improvements in Diaphragm Horns and like Sound-producing Instruments.
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GB191108509A
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Improvements in Automatic Multiple-note Hooters.
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US1103705A
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Automatic multiple-note horn.
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US1062518A
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Horn for motor-cars, motor-cycles, and cycles.
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CA130040A
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Motor car horn
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GB191005940A
|
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Improvements in Hooters for Motor-cars, Bicycles and other Vehicles.
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CA130039A
|
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Motor car horn
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US1000307A
|
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Reed for motor-horns and the like.
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US977238A
|
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Automatic trembler particularly applicable to warning apparatus.
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US970136A
|
|
Horn.
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GB190825866A
|
|
Improvements in Reeds for Motor Horns and the like.
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GB190825863A
|
|
An Automatic Tremolo Device particularly applicable to Acoustic Warning-apparatus Operated by Compressed Air or the like.
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GB190824255A
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A Hooter for Motor Cars, Bicycles and other Vehicles.
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