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DEMPSTER MILL MFG COMPANY

Overview
  • Total Patents
    42
About

DEMPSTER MILL MFG COMPANY has a total of 42 patent applications. Its first patent ever was published in 1902. It filed its patents most often in United States. Its main competitors in its focus markets agriculture, engines, pumps and turbines and machines are YETTER MFG, ROCK ISLAND PLOW CO and GALE MFG COMPANY.

Patent filings in countries

World map showing DEMPSTER MILL MFG COMPANYs patent filings in countries
# Country Total Patents
#1 United States 42

Patent filings per year

Chart showing DEMPSTER MILL MFG COMPANYs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Elliott William 10
#2 William Elliott 9
#3 Smethers James A 6
#4 Schlachter Robert H 5
#5 Dempster Charles B 5
#6 Loeber Herman M 5
#7 Henry Schlachter 4
#8 Hoag John F 2
#9 Thomas William 2
#10 Molony Harry Stuart 2

Latest patents

Publication Filing date Title
US2857851A Priming pump
US2816509A Submersible pumps
US2772617A Agricultural implements
US2523208A Seeding apparatus
US2347091A Planting mechanism
US2260174A Combination carrier
US2193275A Dammer attachment for furrow seeders
US2231131A Deep well pump
US2045762A Cleaning and polishing pad for disks
US2096230A Safety trip shovel back
US2083073A Diaphragm pump for automatic water systems
US1934488A Road maintainer
US1897434A Telescoping boring bar for earth boring machines
US2023292A Pressure controlled windmill regulator
US1934490A Combination seed scattering and shovel back device
US1897421A Furrow seeding machine
US1871747A Impeller for centrifugal pumps
US1811651A Primer for impulse pumps
US1881717A Well casing joint
US1781670A Ridge splitter