Robert P. McCollam

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Roseville, MN, US

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Patents Grantslast 30 patents

Information Patent Grant
Video recording tapes suitable for high speed contact duplication
- Patent number 5,705,253
- Issue date Jan 6, 1998
- Minnesota Mining and Manufacturing Company
- Alvin M. Berg
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Degausser for tape with plural recorded segments
- Patent number 5,420,742
- Issue date May 30, 1995
- Minnesota Mining and Manufacturing
- Donald B. Ketcham
- G11 - INFORMATION STORAGE