Ehrhardt Tool and Machine Co., Inc.

Follow

Organization

St. Louis, MO, US

Organizations

Please log in for detailed analytics

Patents Grantslast 30 patents

Information Patent Grant
Heat exchanger seam and method of making same
- Patent number 5,195,580
- Issue date Mar 23, 1993
- Ehrhardt Tool and Machine Co., Inc.
- Russell W. Hoeffken
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information Patent Grant
Machine process for chamfering of precision pieces having non-linea...
- Patent number 5,119,706
- Issue date Jun 9, 1992
- Ehrhardt Tool and Machine Company, Inc.
- Joseph Poletti
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR