John Sopkowiak

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Williams, MN, US

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Patents Grantslast 30 patents

Information Patent Grant
Window opening control device for horizontal and vertical sliding w...
- Patent number 9,404,288
- Issue date Aug 2, 2016
- Marvin Lumber and Cedar Company
- Daniel Jon Curtis
- E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
Information Patent Grant
Sash limiter apparatus and method
- Patent number 8,776,440
- Issue date Jul 15, 2014
- Marvin Lumber and Cedar Company
- John Sopkowiak
- E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES

Patents Applicationslast 30 patents

Information Patent Application
WINDOW OPENING CONTROL DEVICE FOR HORIZONTAL AND VERTICAL SLIDING W...
- Publication number 20150275556
- Publication date Oct 1, 2015
- Marvin Lumber and Cedar Company, d/b/a Marvin Windows and Doors
- Daniel Jon Curtis
- E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
Information Patent Application
SASH LIMITER APPARATUS AND METHOD
- Publication number 20120167475
- Publication date Jul 5, 2012
- John Sopkowiak
- E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES