| Patents for Charles T. Pratt |
Patents 1 -
12
of 12
      |
| Number | Date | Patentee | Title | Type |
| 434,460 | Aug. 19, 1890 | C.T. Pratt | Drill-chuck | drill press chucks |
| 449,135 | Mar. 31, 1891 | C.T. Pratt | Drill Chuck | drill press chucks |
| 455,490 | Jul. 07, 1891 | C.T. Pratt | Drill-chuck | drill press chucks |
| 455,689 | Jul. 07, 1891 | C.T. Pratt | Drill-chuck | drill press chucks |
| 462,879 | Nov. 10, 1891 | C.T. Pratt | Drill Chuck | drill press chucks |
| 473,639 | Apr. 26, 1892 | C.T. Pratt | Sleeve for taper drills | drill press chucks |
| 742,131 | Oct. 20, 1903 | C.T. Pratt | Apparatus for electroplating | |
| 842,245 | Jan. 29, 1907 | C.T. Pratt | Running-gear for automobiles | body and axle parts |
| 888,737 | May 26, 1908 | C.T. Pratt | Automobile running-gear | body and axle parts |
| 969,805 | Sep. 13, 1910 | C.T. Pratt | Outlet-box | electrical devices |
| 1,091,161 | Mar. 24, 1914 | C.T. Pratt | Producing armored cable | |
| 1,098,919 | Jun. 02, 1914 | C.T. Pratt | Machine for forming cable-armor | |
