|
US1925890A
|
|
Apparatus for the mass production of cast articles
|
|
GB390993A
|
|
Improvements in and connected with the production of sand moulds
|
|
GB345765A
|
|
Improvements in heat radiators with built in cupboards
|
|
US1822073A
|
|
Method of and apparatus for trimming grinding wheels
|
|
US1706763A
|
|
Feed-screw mechanism for lathes
|
|
GB275851A
|
|
Improvements in and relating to machines for cutting screw threads upon tubes
|
|
GB279673A
|
|
Improvements in and relating to lathes
|
