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DA LITE SCREEN COMPANY INC

Overview
  • Total Patents
    28
About

DA LITE SCREEN COMPANY INC has a total of 28 patent applications. Its first patent ever was published in 1928. It filed its patents most often in United States, United Kingdom and Canada. Its main competitors in its focus markets optics, machines and mechanical elements are FOLMER GRAFLEX CORP, KNOX MFG COMPANY and LINHOF NIKOLAUS KARPF KG.

Patent filings in countries

World map showing DA LITE SCREEN COMPANY INCs patent filings in countries
# Country Total Patents
#1 United States 23
#2 United Kingdom 2
#3 Canada 1
#4 Switzerland 1
#5 France 1

Patent filings per year

Chart showing DA LITE SCREEN COMPANY INCs patent filings per year from 1900 to 2020

Focus industries

Top inventors

# Name Total Patents
#1 Du Mais Leo J 12
#2 Heck John T 7
#3 Prokop Frank J 4
#4 Hugo Bernzott 2
#5 Talbot Curtis O 2
#6 Sowers Hal Livingston 1
#7 Du Mais Leo I 1
#8 Pellar Marshall M 1
#9 Betz Howard T 1
#10 Betz Howard Theodore 1

Latest patents

Publication Filing date Title
CA949790A Picture screen roller fabric attachment
US3313337A Projection screen construction
FR1295719A Portable vision screen handle with locking system
GB937795A Projection picture screen
US3033599A Portable viewing screen handle and lock therefor
US2983190A Projection picture screen
US2821883A Projection screen construction
US2864577A Foldable standard base structure
US2696249A Screen web tensioner
US2708559A Tripod screen stand
US2595647A Picture screen stand
US2659559A Picture screen stand
US2591244A Portable screen stand
US2591686A Picture screen stand
US2611427A Portable picture screen
US2530877A Portable screen stand
US2530878A Operating handle and screen casing support for portable picture screens
US2434071A Picture screen supporting structure
US2370235A Portable picture screen
US2377553A Portable reversible screen construction