Inventor Community Patent # Filing Date Issue Date Invention Daly, James J. Bloomington 181,146 17 Jun 1876 15 Aug 1876 Improvement in Washing Machines Darling, Ernest T. Colfax 572,502 01 Jun 1896 01 Dec 1896 Lamp Filler Davis, William O. Bloomington 204,138 22 Jan 1878 28 May 1878 Improvement in Writing Tablets Davis, William O. Bloomington 208,996 13 Sep 1878 15 Oct 1878 Improvement in Writing Tablets Day, Patrick H. Bloomington 88,976 13 Apr 1869 Improvement in Inking Apparatus for Color Printing De Clercq, Augustus H. Bloomington 34,552 25 Feb 1862 Improvement in Pistons for Steam Engines Decker, William Colfax 252,195 11 Oct 1880 10 Jan 1882 Valve Dement, Robert H. Hudson 113,636 11 Apr 1871 Improvement in Wagon Brakes Dement, Robert Henery Hudson 366,818 04 Jun 1887 19 Jul 1887 Car Brake Deobold, Augustus G. Bloomington 325,919 08 Apr 1885 08 Sep 1885 Grain Scouring and Cleaning Machine Diedrich, Nicholas Bloomington 223,450 24 Sep 1879 13 Jan 1880 Heater or Furnace Dillon, Ellis E. Normal 377,097 01 Dec 1887 31 Jan 1888 Horse Blanket Fastener Dimmett, Arthur B. Bloomington Design # 8,574 22 Jul 1875 24 Aug 1875 Design for Picture Frames Dinsley, E. Bloomington 285,433 25 Sep 1883 Car Seat Dixon, Patrick Bloomington 502,851 07 Nov 1891 08 Aug 1893 Washing Machine Dixon, Patrick Bloomington 564,056 05 Oct 1895 14 Jul 1896 Flue Cutter Dixon, Patrick Bloomington 609,536 28 Dec 1897 23 Aug 1898 Flue Cutter Dobson, William A. Bloomington 339,979 07 Feb 1885 13 Apr 1886 Balance Slide Valve Dodenhoff, I. Bloomington 17,088 21 Apr 1857 Improvement in Automatic Rakes for Havesting Machines Dodenhoff, Israel Bloomington 17,729 07 Jul 1857 Improvement in Corn Harvesters Dodenhoff, Israel Bloomington 18,009 18 Aug 1857 Improved Raking Apparatus for Harvesters Dodenhoff, Israel Bloomington Reissue # 6,339 01 Feb 1875 18 Aug 1875 Improvement in Harvester Rakes (Patent # 18,009) Dodge, John B. Jr. Normal 191,661 14 Apr 1877 05 Jun 1877 Improvement in Compositions for Preserving, Drying and Bleaching Fruit Dodge, John R. Jr. Normal 190,748 16 Apr 1877 15 May 1877 Improvement in Fruit Driers Dodge, John R. Jr. Normal 193,243 27 Jun 1877 17 Jul 1877 Improvement in Fruit Driers Dodge, John R. Jr. Normal 198,874 20 Aug 1877 01 Jan 1878 Improvement in Corn Planters Dolloff, Samuel F. Bloomington 115,177 23 May 1871 Improvement in Churn Dashers Dooley, Clarence H. Bloomington 448,943 08 Dec 1890 24 Mar 1891 Disk Corn Planter Dooley, Clarence H. Bloomington 509,797 28 Nov 1893 23 May 1894 Combined Check Row and Drill Dooley, Clarence H. Bloomington 509,797 09 Aug 1893 28 Nov 1893 Combined Check Row and Drill Dooley, Clarence H. Brokaw 593,295 16 Mar 1897 09 Nov 1897 Combined Check Row and Drill Corn Planter Dooley, Clarence H. Bloomington Reissue # 11,504 23 Jul 1895 Combined Check Row and Drill (Patent # 509,797) Dooley, Harry L. Bloomington 448,943 08 Dec 1890 24 Mar 1891 Disk Corn Planter Dooley, Harry L. Bloomington 509,797 28 Nov 1893 23 May 1894 Combined Check Row and Drill Dooley, Harry L. Bloomington 509,797 09 Aug 1893 28 Nov 1893 Combined Check Row and Drill Dooley, Harry L. Bloomington Reissue # 11,504 23 Jul 1895 Combined Check Row and Drill (Patent # 509,797) Dunlap, Oliver Waldron Bloomington 625,295 20 Aug 1898 16 May 1899 Screening Machine Dunn, Jefferson Bloomington 202,021 25 Mar 1878 02 Apr 1878 Improvement in Railway Switches Dunn, Jefferson Bloomington 214,503 25 Mar 1879 22 Apr 1879 Improvement in Devices for Converting Motion Dunn, Jefferson Bloomington 227,244 30 Mar 1880 04 May 1880 Device for Converting Motion Dunn, McCann Bloomington 101,357 19 May 1870 29 Mar 1870 Oven Dyson, Dunbar S. Bloomington 209,803 11 Sep 1878 12 Nov 1878 Improvement in Combination Tools