|
GB131761A
|
|
Improvements in Screw Drivers.
|
|
GB124568A
|
|
Improvements in Machines for Inserting or Extracting Screws applicable also to other Machines of a similar character.
|
|
US1082771A
|
|
Screw-driving mechanism.
|
|
GB191115917A
|
|
Improvements in Screw-drivers.
|
|
GB191110586A
|
|
Improvements in Screw-driving Mechanism.
|
|
GB191101408A
|
|
A Magazine Screw-driving Attachment to an Ordinary Drilling Machine.
|
|
GB191009452A
|
|
An Improved Adjustable Spanner.
|
|
GB191001840A
|
|
Improvements in Quick Adjusting Micrometer Gauges.
|
|
GB190920771A
|
|
Improvements in Micrometer Gauges.
|
|
US932331A
|
|
Mechanical counting-machine.
|
|
GB190723825A
|
|
Improvements in Mechanical Counting Devices.
|
|
CA205095A
|
|
Screw driver
|
