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US1142591A
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Automatically-locking lock.
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GB191309672A
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Improvements in or relating to Locks for Doors, Shutters and the like.
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GB191308872A
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Improvements in Locks for Doors, Shutters and the like.
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GB191115443A
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Improvements in Automatically Locking Locks for use in connection with Roller Shutters and the like.
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US970629A
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Safety device for automatically-locking locks.
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US970628A
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Automatically-locking lock for doors and the like.
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GB191000088A
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Improvements relating to Automatically Locking Locks for Doors and the like.
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