|
GB119754A
|
|
Improvements in or relating to Electro-magnetic Clutches.
|
|
GB190407384A
|
|
Improvements relating to Change Speed Gear.
|
|
US775503A
|
|
Change-speed gear.
|
|
US773999A
|
|
Change-speed gear.
|
|
GB190322690A
|
|
Improvements in Change Speed Gear.
|
|
GB190311723A
|
|
Improvements in Clutches.
|
|
GB190311147A
|
|
Improvements in Change Speed Gear.
|
|
GB189730020A
|
|
Improvements in prepaid Electric Meters.
|
|
GB189727875A
|
|
Improvements in Electric Lifts, Hoists, Capstans, and the like.
|
|
GB189725765A
|
|
Improvements in Securing Shaft Bearings to the Frames of Machinery.
|
|
GB189714923A
|
|
Improvements in Alternate Current Motors.
|
|
GB189712056A
|
|
An Improved Dynamometer.
|
|
GB189711701A
|
|
Improvements in the Construction of Dynamo Electric Machinery.
|
|
GB189629702A
|
|
A Prepaid Electric Meter.
|
|
CA237669A
|
|
Electric current regulator
|
