| All Patents in class 33/828 |
Patents 16 -
30
of 41
      |
| Number | Date | Patentee | Title | Type |
| 1,269,762 | Jun. 18, 1918 | A.A. Warner | Grinding Disc | |
| 1,308,988 | Jul. 08, 1919 | L. Lowenstein | Ratchet Extension for Micrometers | measurement gauges |
| 1,333,453 | Mar. 09, 1920 | P. Pariso, J. Sardo | Micrometer | micrometers |
| 1,369,424 | Feb. 22, 1921 | E.S. Gross | Tool Rest or Support | micrometer attachments |
| 1,370,310 | Mar. 01, 1921 | F.A. Gustavson | Micrometer Caliper Attachment | micrometer attachments |
| 1,389,381 | Aug. 30, 1921 | F.G. Renton | Taper Gaging Caliper | micrometers |
| 1,475,066 | Nov. 20, 1923 | A.T. Geegory | Micrometer Gauge | micrometers |
| 1,539,543 | May 26, 1925 | R.A. Cecchini | Protractor Level | inclinometers |
| 1,540,473 | Jun. 02, 1925 | A.H. Hitchcock | Measuring Instrument Attachment | micrometer attachments |
| 1,553,875 | Sep. 15, 1925 | J.W. Parker | Micrometer Caliper | micrometers |
| 1,668,248 | May 01, 1928 | R.W. Olson | Micrometer Attachment | micrometers |
| 1,678,030 | Jul. 24, 1928 | H.J. Yount | Micrometer Caliper | micrometers |
| 1,679,189 | Jul. 31, 1928 | A.H. Wadell | Micrometer Attachment for Adjusting Tools | micrometers |
| 2,199,236 | Apr. 30, 1940 | C. Bigwood | Inside Micrometer Attachment | inside micrometers |
| 2,217,859 | Oct. 15, 1940 | J.E. Campen | Measuring Instrument | measurement gauges |
