Len R. Christensen

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Florence, OR, US

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Patents Grantslast 30 patents

Information Patent Grant
Protective enclosure for interior and exterior spaces
- Patent number 11,142,903
- Issue date Oct 12, 2021
- NetTalon Security Systems, Inc.
- Donald R. Jones
- E04 - BUILDING
Information Patent Grant
Hybrid hardened ballistic security door
- Patent number 10,060,181
- Issue date Aug 28, 2018
- Donald R. Jones
- E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS