| All Patents in class 33/203.1 |
Patents 1 -
7
of 7
      |
| Number | Date | Patentee | Title | Type |
| 428,193 | May 20, 1890 | G.B. Widdifield | Improvements in Combined Calipers and Balance-Wheel Truing-Pliers | pliers |
| 738,723 | Sep. 08, 1903 | C.H. Jenkins | Watchmakers Calipers | watchmaker |
| 848,831 | Apr. 02, 1907 | J.E. Kampe | Indicator Attachment For Calipers | watchmaker |
| 1,001,278 | Aug. 22, 1911 | J.E. Kampe | Watchmaker's Poising Calipers | clockmaker |
| 1,265,423 | May 07, 1918 | F.W. Burnett | Truing Attachment for Lathes | metal lathe accessories and attachments |
| 1,286,647 | Dec. 03, 1918 | J.B. Jones | Gage | measurement gauges |
| 2,039,226 | Apr. 28, 1936 | J.E. Kampe | Watchmakers Calipers | watchmaker |
