Michael R. Nier

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Harrisburg, PA, US

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Patents Grantslast 30 patents

Information Patent Grant
Compound counterbalance and winding systems with zero torque spirals
- Patent number 4,914,780
- Issue date Apr 10, 1990
- Schlegel Corporation
- Tracy G. Rogers
- E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
Information Patent Grant
Fail-safe tip-lock shoe
- Patent number 4,854,077
- Issue date Aug 8, 1989
- Schlegel Corporation
- Tracy G. Rogers
- E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES