GB189313299A - Improvements in or connected with Valvular Devices for Use in Hydraulic or other Machinery Employing or Worked by Fluids.
- Google Patents
Improvements in or connected with Valvular Devices for Use in Hydraulic or other Machinery Employing or Worked by Fluids.
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Everard Richard Calthrop
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Individual
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Individual
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GB189313299D1893-07-081893-07-08Improvements in or connected with Valvular Devices for Use in Hydraulic or other Machinery Employing or Worked by Fluids.
ExpiredGB189313299A
(en)