|
US3097435A
|
|
Self testing device
|
|
GB749474A
|
|
Improvements in or relating to drill press assembly
|
|
GB679911A
|
|
Multi-purpose machine tool for metal, wood and other materials
|
|
US2623269A
|
|
Convertible material working machine
|
|
US2330702A
|
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Spool rack
|
|
GB283025A
|
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Improvements in devices for use with maps or the like
|
|
GB187605A
|
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New or improved process for the manufacture of condensation products from urea and formaldehyde
|
|
GB208761A
|
|
Improved manufacture of condensation products of formaldehyde and carbamide or carbamide derivatives
|
|
GB178396A
|
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Improved process for welding metals
|
|
GB157798A
|
|
Improved process for joining metals
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