Wigma Corporation

Follow

Organization

Royal Oak, MI, US

Organizations

Please log in for detailed analytics

Patents Grantslast 30 patents

Information Patent Grant
Underground valve anti-freeeze device
- Patent number 3,983,896
- Issue date Oct 5, 1976
- Wigma Corporation
- Charles L. Harrington
- E03 - WATER SUPPLY SEWERAGE
Information Patent Grant
Sprinkler head shut-off mechanism
- Patent number 3,976,141
- Issue date Aug 24, 1976
- Wigma Corporation
- Charles L. Harrington
- A62 - LIFE-SAVING FIRE-FIGHTING