| Patents for Charles Elterich |
Patents 1 -
7
of 7
      |
| Number | Date | Patentee | Title | Type |
| 192,423 | Jun. 26, 1877 | C. Elterich | Tap Wrench | tap wrenches and die stocks |
| 195,997 | Oct. 09, 1877 | C. Elterich | Improvement in drill-chucks | drill chucks |
| 196,205 | Oct. 16, 1877 | C. Elterich, A.H. Briggs | Improvement in drill-chucks | drill chucks |
| 207,113 | Aug. 20, 1878 | C. Elterich, A.H. Briggs | Improvement in drill-chucks | drill chucks |
| 412,952 | Oct. 15, 1889 | C. Elterich | Tap and holder therefor | taps and dies |
| 559,372 | May 05, 1896 | C. Elterich | Tap | taps and dies |
| 574,721 | Jan. 05, 1897 | C. Elterich | Thread Cutting Implement | taps and dies |
