GB191421865A
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A New Method of and Means for the Propulsion of Projectiles.
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GB191128241A
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Improvements in Manufacturing Mirrors for Optical Purposes.
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GB191100643A
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Improvements in the Application of Electricity to Surgical, Optical and like Instruments.
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GB190902663A
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Improvements in Screws for Attaching Lenses to Rimless Eyeglass and Spectacle Mountings.
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GB190819165A
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Improvements in Instruments for Testing and Examining the Eye.
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GB189619690A
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Improvements in Aneroid Barometers.
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GB189511274A
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Improvements in Spray Producers.
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GB189424170A
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Improvements in Self-registering Thermometers.
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GB189324122A
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Improvements in Thermometers and Barometers.
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CA602173A
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Multiple electrical sockets
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CA353721A
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Orthodontia band bracket
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