James M. Hammell

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Aurora, OH, US

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Patents Grantslast 30 patents

Information Patent Grant
Hydropneumatic monitoring device
- Patent number 4,574,920
- Issue date Mar 11, 1986
- Lubriquip-Houdaille, Inc.
- James J. Callahan
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...