| Patents for Charles H. Luther Jr. |
Patents 16 -
24
of 24
      |
| Number | Date | Patentee | Title | Type |
| 717,296 | Dec. 30, 1902 | F. Spaulding | Micrometer Calipers | micrometers |
| 761,328 | May 31, 1904 | F. Spalding | Micrometer Calipers | micrometers |
| 761,929 | Jun. 07, 1904 | C.L. Weld | Try Square | try squares |
| 763,076 | Jun. 21, 1904 | F. Spalding | Depth Gage | micrometer depth gauges |
| 769,197 | Sep. 06, 1904 | F. Spaulding | Micrometer Calipers | micrometers |
| 783,749 | Feb. 28, 1905 | J.J. Hartley | Center Punch | punches |
| 790,665 | May 23, 1905 | F. Spalding | Micrometer Calipers | micrometers |
| 842,263 | Jan. 29, 1907 | F. Spalding | Micrometer Calipers | inside micrometers |
| 902,492 | Oct. 27, 1908 | F.O. Jaques, Jr. | Micrometer Calipers | micrometers |
