| All Patents in class 451/9 |
Patents 1 -
15
of 23
      |
| Number | Date | Patentee | Title | Type |
| 521,976 | Jun. 26, 1894 | O.W. Am Ende | Thickness Gage for Paper making Machines | thickness gages |
| 741,087 | Oct. 13, 1903 | C.B. Weidlog | Indicator for Boring Machines | measuring tools |
| 1,182,861 | May 09, 1916 | H.K. Spencer | Metal Working Tool | dial indicator gauges |
| 1,263,142 | Apr. 16, 1918 | E. Stubbs | Micrometer Indicator for Tool Feeding Mechanisms | micrometers |
| 1,427,510 | Aug. 29, 1922 | W. Avery | Taper Attachment for Lathes | metal lathe accessories and attachments |
| 1,917,504 | Jul. 11, 1933 | F.W. Curtis | Cutter Grinder | sharpening machines |
| 1,952,965 | Mar. 27, 1934 | L.O. Beard | Instrument for measuring tappet-valve length while grinding valves and seats | valve and seat maintenance |
| 2,167,189 | Jul. 25, 1939 | J. Verderber | Machine Tool | metalworking machines |
| 2,244,413 | Jun. 03, 1941 | J.B. Armitage | Precision Indicating Apparatus for Machine Tools | milling machine accessories |
| 2,326,368 | Aug. 10, 1943 | C. Black, A. Kullman | Gear Forming Machine | gear measuring machines |
| 2,326,416 | Aug. 10, 1943 | M.V. Tracy | Gauge for power saws | radial arm saws |
| 2,363,946 | Nov. 28, 1944 | L.W. Curry | Grinding Machine | surface grinders |
| 2,559,839 | Jul. 10, 1951 | A.H. Fotsch, W.K. Andrew | Machine Tool Positioning Mechanism | milling machines |
| 2,569,873 | Oct. 02, 1951 | E.L. Stacey | Method of Setting of Tool for Brake Drum Machining | special purpose gauges |
| 2,584,963 | Feb. 05, 1952 | W.G. Hoelscher | Feed Indicating Dials for Lathe Carriages | metal lathe mechanisms |
