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DE850672C
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Device to prevent fraudulent opening of the housing of time registration devices for carrier pigeon competitions
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DE816079C
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Drive mechanism for electrical slave clock
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DE912270C
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Lever cash register with a receipt dispenser
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DE814956C
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Rear derailleur with oscillating switching element
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DE810135C
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Polarized drive mechanism for electrical slave clock
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DE808650C
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Marking device for watchman clocks
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DE802956C
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Number roller made of high-melting copper alloy for counters
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DE806498C
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Working time recorder for card printing
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DE813082C
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Contact device for the magnet of the hammer of a work time registration device
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DE813322C
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Working time recorder with automatic triggering of the hammer through the registration card
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DE828318C
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Printing unit for time registration devices for racing pigeon races
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DE845278C
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Counter provided with swiveling gear mechanism bridge
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