P J H, INC.

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NORFOLK, VA, US

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Patents Grantslast 30 patents

Information Patent Grant
Underwater dredging apparatus and cutter head therefor
- Patent number 4,680,879
- Issue date Jul 21, 1987
- PJH, Inc.
- Charles E. Hill
- E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING

Patents Applicationslast 30 patents

Trademarklast 30 trademarks

Information Trademark
73535600 - ELECTRO MUD EATER
- Serial number 73535600
- Registration number 1366353
- Filing date May 3, 1985
- P J H, INC.
- 7 - Machines and machine tools