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US2864661A
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Instrument for checking the rate of time-piece movements
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GB753118A
|
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Instrument for checking the rate of time-piece movements
|
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GB752181A
|
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Supporting appliance for time-pieces
|
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US2819584A
|
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Lever escapement
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US2849273A
|
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Instrument for checking the rate of time-piece movements
|
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GB750853A
|
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Instrument for checking the rate of time-piece movements
|
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GB749152A
|
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Appliance for supporting a time-piece or time-piece movement when checking the rate thereof
|
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US2671309A
|
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Bearing for clockwork members
|
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US2495858A
|
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Electrical movement for timekeepers
|
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US2589717A
|
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Device for fixing the outer end of a hairspring to the cock of timepieces
|
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GB629402A
|
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Improved means for fixing the outer end of a hair-spring to the balance cock of a time-piece
|
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GB621180A
|
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Improvements in or relating to a time-piece balance-wheel with adjustable moment of inertia
|
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GB610387A
|
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Improvements in and relating to balance wheel spiral spring attachments
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US2529807A
|
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Hairspring collet
|
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US2500557A
|
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Balance and hairspring timepiece regulator
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US2340677A
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Regulating device for watches
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US2307841A
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Regulating device for watches
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US2218889A
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Tight winding device
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US2308189A
|
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Watchcase
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GB508189A
|
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Improvements in tight watch cases with unbreakable glasses and process of their manufacture
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