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US Patent: 1,716,796
Dilatometer
Patentee: Stanley P. Rockwell (exact or similar names) - West Hartford, CT USPTO Classifications: 374/55 Tool Categories: metalworking tools : machinist tools : measuring tools Assignees: None Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: Jun. 29, 1928 Granted: Jun. 11, 1929 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin
Description: This device accurately measures a metal's coefficient of expansion due to temperature changes.

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