| Patents for Charles B. McDonald |
Patents 1 -
6
of 6
      |
| Number | Date | Patentee | Title | Type |
| 834,069 | Oct. 23, 1906 | C.B. McDonald, C.D. McDonald | Can-soldering machine | can making machines |
| 864,325 | Aug. 27, 1907 | C.B. McDonald | Can-forming machine | can making machines |
| 938,165 | Oct. 26, 1909 | C.B. McDonald | Can-testing machine | can making machines |
| 945,573 | Jan. 04, 1910 | C.B. McDonald, C.D. McDonald | Can-testing machine | can making machines |
| 1,013,796 | Jan. 02, 1912 | C.B. McDonald, J.E. McCullough | Can-testing machine | can making machines |
| 1,025,199 | May 07, 1912 | C.B. McDonald | Can-testing machine | can making machines |
