William C. Humphrey

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Raleigh, NC, US

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Patents Grantslast 30 patents

Information Patent Grant
Hopper for sandblasting machine
- Patent number D339361
- Issue date Sep 14, 1993
- Southern Case, Inc.
- William C. Humphrey
- D15 - Machines not elsewhere specified
Information Patent Grant
Wheeled hopper for sandblasting machine
- Patent number D332456
- Issue date Jan 12, 1993
- Southern Case, Inc.
- William C. Humphrey
- D15 - Machines not elsewhere specified