Donald A. Larson

Follow

Person

Circle Pines, MN, US

People

Patents Grantslast 30 patents

Information Patent Grant
Adjustable gate for doorways
- Patent number 4,677,791
- Issue date Jul 7, 1987
- North States Industries, Inc.
- Donald A. Larson
- E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS