Robert A. Heitman

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St. Paul Park, MN, US

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Patents Grantslast 30 patents

Information Patent Grant
Mounting printing plate cylinder to rotatable drive shaft
- Patent number 6,408,752
- Issue date Jun 25, 2002
- T.W. Wright, Inc.
- David A. McEachern
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
Magnetic cylinder with thin foraminate layer between cylinder core...
- Patent number 5,898,352
- Issue date Apr 27, 1999
- T. D. Wright, Inc.
- David A. McEachern
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS