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EWING DEV COMPANY

Overview
  • Total Patents
    28
About

EWING DEV COMPANY has a total of 28 patent applications. Its first patent ever was published in 1935. It filed its patents most often in United States, Canada and France. Its main competitors in its focus markets civil engineering, machines and machine tools are ORANGE SCREEN COMPANY, HOUGH SHADE CORP and HIGGIN MFG CO.

Patent filings in countries

World map showing EWING DEV COMPANYs patent filings in countries
# Country Total Patents
#1 United States 18
#2 Canada 5
#3 France 2
#4 United Kingdom 2
#5 Germany 1

Patent filings per year

Chart showing EWING DEV COMPANYs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Ewing Walkley B 21
#2 Grebe John J 6
#3 Thayer Stuart W 1
#4 Grebe John I 1

Latest patents

Publication Filing date Title
US2925634A Adjustable blind for light openings
US3015156A Method of making a shade screen
US3009389A Corrugated type skylight shading
US2866353A Motion translating devices
US2773518A Quill assembly
US2630170A Means for anchoring screening
US2632507A Stileless screen mounting
US2550680A Means for intermittently feeding stock
US2570791A Welded frame structure
US2547632A Sun screen with plastic warp
US2565450A Means for controlling advancement of stock
US2405197A Machine for making sun screens
US2405198A Means for controlling advancement of stock
US2304990A Self-rolling screen
US2319225A Sun screen
GB536030A Improvements in or relating to metal fabrics, metal screens or screen fabrics
US2223317A Weaving machine
US2194222A Screen
GB476021A Improvements in or relating to insect screens
US2078940A Screen cloth