SU93387A1
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Device for blocking the comb conveyor and lifting the fender plates on cotton machines
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GB524198A
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A pressure-casting furnace, especially for bearing metals
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GB524124A
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Thin linings of bearing metals
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US2297232A
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Magnifying device
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US2127878A
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Magnetic compass
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US1915195A
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Method of and machine for grinding in valves and cocks
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US1903593A
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Eyeglasses
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GB297627A
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Improvements in multi-focal lenses
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GB293646A
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Tinplate box with lid to be opened by pressure
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US1706177A
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Lens
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GB282282A
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Improvements in lenses for signalling lamps, searchlights and like purposes
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US1752680A
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Optical means for producing color cinematographic pictures
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GB276591A
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Improvements in apparatus for coloured kinematographic photography
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US1678153A
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Price-indicating balance
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GB266971A
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Improvements in price indicating balances
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US1728426A
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Color cinematography
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GB252639A
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Improvements in and relating to colour kinematography
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