Kaempen; Charles R.

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Alta Loma, CA, US

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Patents Grantslast 30 patents

Information Patent Grant
Method for making composite double-wall underground tank structure
- Patent number 5,742,992
- Issue date Apr 28, 1998
- Kaempen; Charles R.
- Charles E. Kaempen
- B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
Information Patent Grant
Composite double-wall underground tank structure and method for mak...
- Patent number 5,590,803
- Issue date Jan 7, 1997
- Kaempen; Charles R.
- Charles E. Kaempen
- B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL