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Combination bunk, table, and seats for jails and the like
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Locking and operating mechanism for cell doors
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Cell door operating and locking system
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Cell door locking mechanism
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Actuating mechanism for cell doors and locks
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Locking attachment for cell door operating mechanisms
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Prison locking system
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Vehicle barrier
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Speaking device
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Master control cabinet for jail door operating systems
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Actuating mechanism for cell doors and locks
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Lock and door operating mechanism
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Lock and door operating mechanism
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Window for jails and the like
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Cell door locking and operating mechanism
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