| All Patents in class 33/645 |
Patents 1 -
6
of 6
      |
| Picture | Number | Date | Patentee | Title |
 | 1,782,284 | Nov. 18, 1930 | M. Betancourt | Bit Gauge with Level |
 | 2,167,189 | Jul. 25, 1939 | J. Verderber | Machine Tool |
 | 2,761,217 | Sep. 04, 1956 | H. King | Machine Alignment Detector |
 | 2,807,091 | Sep. 24, 1957 | F.E. Michelson | Keyway Checkers |
 | 3,869,801 | Mar. 11, 1975 | G.A. Lycan | Gauge for measuring the degree of alignment at the inner surfaces of two tubular members positioned end to end |
| | 4,890,421 | Jan. 02, 1990 | K.S. Barney, W.R. Moore, Jr. | Automatic Measurement System |
