Fred L. Ecker

Follow

Person

Sierra Madre, CA, US

People

Patents Grantslast 30 patents

Information Patent Grant
Pre-stressed construction element
- Patent number 4,607,470
- Issue date Aug 26, 1986
- Concrete Systems, Inc.
- Fred L. Ecker
- E04 - BUILDING
Information Patent Grant
Column form support system and method
- Patent number 4,604,250
- Issue date Aug 5, 1986
- Concrete Systems, Inc.
- Fred L. Ecker
- E04 - BUILDING