| | ||
| Home| FAQ | Search:Advanced|Person|Company| Type|Class | Login | |
| Quick search: | ||
| Patents for Christian E. Ruf | |||||
      | |||||
| Number | Date | Patentee | Title | Type | |
| 1,891,196 | Dec. 13, 1932 | C.E. Ruf, E.H. Aldeborgh | Combination Dial Indicator | ||
| 1,928,001 | Sep. 26, 1933 | C.E. Ruf, L.G. Spealman, P.D. Ritchey, E.H. Aldeborgh | Projection Indicator Measuring Instrument | ||
| 2,095,405 | Oct. 12, 1937 | C.E. Ruf, E.H. Aldeborgh | Bore Measuring Attachment for Dial Indicators | measurement gauges | |