Learn more

DAVID MACLEISH SMITH

Overview
  • Total Patents
    26
About

DAVID MACLEISH SMITH has a total of 26 patent applications. Its first patent ever was published in 1927. It filed its patents most often in United Kingdom. Its main competitors in its focus markets engines, pumps and turbines, packaging and shipping and environmental technology are NORWALK TURBO INC, POSSELL CLARENCE R and BIRMANN RUDOLPH.

Patent filings in countries

World map showing DAVID MACLEISH SMITHs patent filings in countries
# Country Total Patents
#1 United Kingdom 26

Patent filings per year

Chart showing DAVID MACLEISH SMITHs patent filings per year from 1900 to 2020

Latest patents

Publication Filing date Title
GB648103A Improvements in or relating to regenerative heat exchangers
GB623419A Improvements relating to gas turbine plants
GB621256A Improvements relating to multi-stage axial-flow compressors or turbines
GB618193A Improvements relating to elastic fluid turbines
GB594206A Improvements in internal combustion turbine plant for propulsion
GB601170A Improvements in internal combustion turbine plant for propulsion
GB594207B Improvements in internal combustion turbine plant for propulsion
GB585959A Improvements in regenerative gas turbine plant
GB604114A Improvements in regenerative gas turbine plants
GB586602A Improvements in regenerative gas turbine plants
GB578686A Improvements in regenerative gas turbine plant
GB579140A Improvements in or relating to gas turbines
GB586573A Improvements in or relating to internal combustion turbine plant
GB586572A Improvements in internal combustion turbine plant for propulsion by jet action, at least in part
GB583473A Improvements in multi-stage axial flow compressors, more particularly for use in internal combustion power plant for propulsion in air
GB583469A Improvements in turbo compressors
GB595116A Improvements in internal combustion turbine plant
GB577014A Improvements in speed control systems
GB580841A Improvements in gas impressors
GB448575A Improvements relating to control apparatus for winding gear