| Patents for Frank Burgi |
Patents 1 -
5
of 5
      |
| Number | Date | Patentee | Title | Type |
| 2,939,220 | Jun. 07, 1960 | F. Burgi, W.J. Croshier | Wire Holding Attachment for Three Wire Method of Measuring Threads | measurement gauges |
| GB-874,669 | Aug. 10, 1961 | W.J. Croshier, F. Burgi | Wire Holding Attachment for Three-Wire Method of Measuring Threads | |
| CA-630,623 | Nov. 07, 1961 | W.J. Croshier, F. Burgi | Wire Holding Attachment for Three-Wire Method of Measuring Threads | |
| 3,026,622 | Mar. 27, 1962 | F. Burgi, W.J. Croshier | Dial Bord Gages Having an Extended Range | |
| CA-646,461 | Aug. 07, 1962 | W.J. Croshier, F. Burgi | Dial Bore Gages Having an Extended Range | |
